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face detection ok.

master
pomin-163 4 months ago
parent
commit
480574d9f0
  1. 6
      Proj.code-workspace
  2. 2
      components/bus/CMakeLists.txt
  3. 19
      components/bus/Kconfig
  4. 7
      components/bus/component.mk
  5. 487
      components/bus/i2c_bus.c
  6. 596
      components/bus/i2s_lcd_esp32_driver.c
  7. 469
      components/bus/i2s_lcd_esp32s2_driver.c
  8. 296
      components/bus/include/i2c_bus.h
  9. 125
      components/bus/include/i2s_lcd_driver.h
  10. 164
      components/bus/include/spi_bus.h
  11. 282
      components/bus/spi_bus.c
  12. 3
      components/bus/test/CMakeLists.txt
  13. 5
      components/bus/test/component.mk
  14. 269
      components/bus/test/test_i2c_bus.c
  15. 119
      components/bus/test/test_spi_bus.c
  16. 11
      components/esp-code-scanner/.project
  17. 22
      components/esp-code-scanner/CMakeLists.txt
  18. 102
      components/esp-code-scanner/include/esp_code_scanner.h
  19. BIN
      components/esp-code-scanner/lib/esp32/libesp-code-scanner.a
  20. BIN
      components/esp-code-scanner/lib/esp32s2/libesp-code-scanner.a
  21. BIN
      components/esp-code-scanner/lib/esp32s3/libesp-code-scanner.a
  22. BIN
      components/esp-code-scanner/lib/libnewlib_iconv.a
  23. 5
      components/fb_gfx/CMakeLists.txt
  24. 250
      components/fb_gfx/FreeMonoBold12pt7b.h
  25. 2
      components/fb_gfx/component.mk
  26. 210
      components/fb_gfx/fb_gfx.c
  27. 45
      components/fb_gfx/include/fb_gfx.h
  28. 492
      components/lvgl_esp32_drivers/lvgl_tft/st7789.c
  29. 38
      components/modules/CMakeLists.txt
  30. 248
      components/modules/Kconfig
  31. 112
      components/modules/ai/who_ai_utils.cpp
  32. 42
      components/modules/ai/who_ai_utils.hpp
  33. 86
      components/modules/ai/who_cat_face_detection.cpp
  34. 12
      components/modules/ai/who_cat_face_detection.hpp
  35. 293
      components/modules/ai/who_color_detection.cpp
  36. 24
      components/modules/ai/who_color_detection.hpp
  37. 98
      components/modules/ai/who_human_face_detection.cpp
  38. 12
      components/modules/ai/who_human_face_detection.hpp
  39. 245
      components/modules/ai/who_human_face_recognition.cpp
  40. 21
      components/modules/ai/who_human_face_recognition.hpp
  41. 78
      components/modules/ai/who_motion_detection.cpp
  42. 9
      components/modules/ai/who_motion_detection.hpp
  43. 121
      components/modules/button/who_adc_button.c
  44. 29
      components/modules/button/who_adc_button.h
  45. 100
      components/modules/button/who_button.c
  46. 28
      components/modules/button/who_button.h
  47. 87
      components/modules/camera/who_camera.c
  48. 245
      components/modules/camera/who_camera.h
  49. 198
      components/modules/imu/qma7981.c
  50. 61
      components/modules/imu/qma7981.h
  51. 244
      components/modules/lcd/logo_en_240x240_lcd.h
  52. 142
      components/modules/lcd/who_lcd.c
  53. 35
      components/modules/lcd/who_lcd.h
  54. 163
      components/modules/led/who_led.c
  55. 37
      components/modules/led/who_led.h
  56. 41
      components/modules/trace/who_trace.c
  57. 12
      components/modules/trace/who_trace.h
  58. 778
      components/modules/web/app_httpd.cpp
  59. 8
      components/modules/web/app_httpd.hpp
  60. 250
      components/modules/web/app_mdns.c
  61. 16
      components/modules/web/app_mdns.h
  62. 196
      components/modules/web/app_wifi.c
  63. 37
      components/modules/web/app_wifi.h
  64. 7
      components/modules/web/www/compress_pages.sh
  65. 1152
      components/modules/web/www/index_ov2640.html
  66. BIN
      components/modules/web/www/index_ov2640.html.gz
  67. 1368
      components/modules/web/www/index_ov3660.html
  68. BIN
      components/modules/web/www/index_ov3660.html.gz
  69. 1391
      components/modules/web/www/index_ov5640.html
  70. BIN
      components/modules/web/www/index_ov5640.html.gz
  71. 1012
      components/modules/web/www/monitor.html
  72. BIN
      components/modules/web/www/monitor.html.gz
  73. 21
      components/screen/CMakeLists.txt
  74. 46
      components/screen/Kconfig
  75. 22
      components/screen/component.mk
  76. 390
      components/screen/controller_driver/ili9341/ili9341.c
  77. 134
      components/screen/controller_driver/ili9341/ili9341.h
  78. 344
      components/screen/controller_driver/ili9486/ili9486.c
  79. 128
      components/screen/controller_driver/ili9486/ili9486.h
  80. 401
      components/screen/controller_driver/ili9488/ili9488.c
  81. 138
      components/screen/controller_driver/ili9488/ili9488.h
  82. 454
      components/screen/controller_driver/ili9806/ili9806.c
  83. 128
      components/screen/controller_driver/ili9806/ili9806.h
  84. 639
      components/screen/controller_driver/nt35510/nt35510.c
  85. 126
      components/screen/controller_driver/nt35510/nt35510.h
  86. 686
      components/screen/controller_driver/rm68120/rm68120.c
  87. 126
      components/screen/controller_driver/rm68120/rm68120.h
  88. 364
      components/screen/controller_driver/ssd1306/ssd1306.c
  89. 188
      components/screen/controller_driver/ssd1306/ssd1306.h
  90. 358
      components/screen/controller_driver/ssd1307/ssd1307.c
  91. 190
      components/screen/controller_driver/ssd1307/ssd1307.h
  92. 297
      components/screen/controller_driver/ssd1322/ssd1322.c
  93. 137
      components/screen/controller_driver/ssd1322/ssd1322.h
  94. 316
      components/screen/controller_driver/ssd1351/ssd1351.c
  95. 134
      components/screen/controller_driver/ssd1351/ssd1351.h
  96. 345
      components/screen/controller_driver/ssd1963/ssd1963.c
  97. 123
      components/screen/controller_driver/ssd1963/ssd1963.h
  98. 332
      components/screen/controller_driver/st7789/st7789.c
  99. 136
      components/screen/controller_driver/st7789/st7789.h
  100. 322
      components/screen/controller_driver/st7796/st7796.c

6
Proj.code-workspace

@ -95,7 +95,11 @@
"app.h": "c",
"app_init.h": "c",
"freertos.h": "c",
"led_strip.h": "c"
"led_strip.h": "c",
"xlocale": "c",
"xstring": "c",
"who_human_face_detection.hpp": "c",
"who_camera.h": "c"
},
},
}

2
components/bus/CMakeLists.txt

@ -0,0 +1,2 @@
idf_component_register(SRC_DIRS "."
INCLUDE_DIRS "include" )

19
components/bus/Kconfig

@ -0,0 +1,19 @@
menu "Bus Options"
menu "I2C Bus Options"
config I2C_BUS_DYNAMIC_CONFIG
bool "enable dynamic configuration"
default y
help
If enable, i2c_bus will dynamically check configs and re-install i2c driver before each transfer,
hence multiple devices with different configs on a single bus can be supported.
config I2C_MS_TO_WAIT
int "mutex block time"
default 200
range 50 5000
help
task block time when try to take the bus, unit:milliseconds
endmenu
endmenu

7
components/bus/component.mk

@ -0,0 +1,7 @@
#
# "main" pseudo-component makefile.
#
# (Uses default behaviour of compiling all source files in directory, adding 'include' to include path.)
COMPONENT_ADD_INCLUDEDIRS := include
COMPONENT_SRCDIRS := .

487
components/bus/i2c_bus.c

@ -0,0 +1,487 @@
// Copyright 2020-2021 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stdio.h>
#include <string.h>
#include "freertos/FreeRTOS.h"
#include "freertos/semphr.h"
#include "esp_log.h"
#include "i2c_bus.h"
#define I2C_ACK_CHECK_EN 0x1 /*!< I2C master will check ack from slave*/
#define I2C_ACK_CHECK_DIS 0x0 /*!< I2C master will not check ack from slave */
#define I2C_BUS_FLG_DEFAULT (0)
#define I2C_BUS_MASTER_BUF_LEN (0)
#define I2C_BUS_MS_TO_WAIT CONFIG_I2C_MS_TO_WAIT
#define I2C_BUS_TICKS_TO_WAIT (I2C_BUS_MS_TO_WAIT/portTICK_RATE_MS)
#define I2C_BUS_MUTEX_TICKS_TO_WAIT (I2C_BUS_MS_TO_WAIT/portTICK_RATE_MS)
typedef struct {
i2c_port_t i2c_port; /*!<I2C port number */
bool is_init; /*if bus is initialized*/
i2c_config_t conf_active; /*!<I2C active configuration */
SemaphoreHandle_t mutex; /* mutex to achive thread-safe*/
int32_t ref_counter; /*reference count*/
} i2c_bus_t;
typedef struct {
uint8_t dev_addr; /*device address*/
i2c_config_t conf; /*!<I2C active configuration */
i2c_bus_t *i2c_bus; /*!<I2C bus*/
} i2c_bus_device_t;
static const char *TAG = "i2c_bus";
static i2c_bus_t s_i2c_bus[I2C_NUM_MAX];
#define I2C_BUS_CHECK(a, str, ret) if(!(a)) { \
ESP_LOGE(TAG,"%s:%d (%s):%s", __FILE__, __LINE__, __FUNCTION__, str); \
return (ret); \
}
#define I2C_BUS_CHECK_GOTO(a, str, lable) if(!(a)) { \
ESP_LOGE(TAG,"%s:%d (%s):%s", __FILE__, __LINE__, __FUNCTION__, str); \
goto lable; \
}
#define I2C_BUS_INIT_CHECK(is_init, ret) if(!is_init) { \
ESP_LOGE(TAG,"%s:%d (%s):i2c_bus has not inited", __FILE__, __LINE__, __FUNCTION__); \
return (ret); \
}
#define I2C_BUS_MUTEX_TAKE(mutex, ret) if (!xSemaphoreTake(mutex, I2C_BUS_MUTEX_TICKS_TO_WAIT)) { \
ESP_LOGE(TAG, "i2c_bus take mutex timeout, max wait = %d ms", I2C_BUS_MUTEX_TICKS_TO_WAIT); \
return (ret); \
}
#define I2C_BUS_MUTEX_TAKE_MAX_DELAY(mutex, ret) if (!xSemaphoreTake(mutex, portMAX_DELAY)) { \
ESP_LOGE(TAG, "i2c_bus take mutex timeout, max wait = %d ms", portMAX_DELAY); \
return (ret); \
}
#define I2C_BUS_MUTEX_GIVE(mutex, ret) if (!xSemaphoreGive(mutex)) { \
ESP_LOGE(TAG, "i2c_bus give mutex failed"); \
return (ret); \
}
static esp_err_t i2c_driver_reinit(i2c_port_t port, const i2c_config_t *conf);
static esp_err_t i2c_driver_deinit(i2c_port_t port);
static esp_err_t i2c_bus_write_reg8(i2c_bus_device_handle_t dev_handle, uint8_t mem_address, size_t data_len, const uint8_t *data);
static esp_err_t i2c_bus_read_reg8(i2c_bus_device_handle_t dev_handle, uint8_t mem_address, size_t data_len, uint8_t *data);
inline static bool i2c_config_compare(i2c_port_t port, const i2c_config_t *conf);
/**************************************** Public Functions (Application level)*********************************************/
i2c_bus_handle_t i2c_bus_create(i2c_port_t port, const i2c_config_t *conf)
{
I2C_BUS_CHECK(port < I2C_NUM_MAX, "I2C port error", NULL);
I2C_BUS_CHECK(conf != NULL, "pointer = NULL error", NULL);
I2C_BUS_CHECK(conf->mode == I2C_MODE_MASTER, "i2c_bus only supports master mode", NULL);
if (s_i2c_bus[port].is_init) {
/**if i2c_bus has been inited and configs not changed, return the handle directly**/
if (i2c_config_compare(port, conf)) {
ESP_LOGW(TAG, "i2c%d has been inited, return handle directly, ref_counter=%d", port, s_i2c_bus[port].ref_counter);
return (i2c_bus_handle_t)&s_i2c_bus[port];
}
} else {
s_i2c_bus[port].mutex = xSemaphoreCreateMutex();
I2C_BUS_CHECK(s_i2c_bus[port].mutex != NULL, "i2c_bus xSemaphoreCreateMutex failed", NULL);
s_i2c_bus[port].ref_counter = 0;
}
esp_err_t ret = i2c_driver_reinit(port, conf);
I2C_BUS_CHECK(ret == ESP_OK, "init error", NULL);
s_i2c_bus[port].conf_active = *conf;
s_i2c_bus[port].i2c_port = port;
return (i2c_bus_handle_t)&s_i2c_bus[port];
}
esp_err_t i2c_bus_delete(i2c_bus_handle_t *p_bus)
{
I2C_BUS_CHECK(p_bus != NULL && *p_bus != NULL, "pointer = NULL error", ESP_ERR_INVALID_ARG);
i2c_bus_t *i2c_bus = (i2c_bus_t *)(*p_bus);
I2C_BUS_INIT_CHECK(i2c_bus->is_init, ESP_FAIL);
I2C_BUS_MUTEX_TAKE_MAX_DELAY(i2c_bus->mutex, ESP_ERR_TIMEOUT);
/** if ref_counter == 0, de-init the bus**/
if ((i2c_bus->ref_counter) > 0) {
ESP_LOGW(TAG, "i2c%d is also handled by others ref_counter=%u, won't be de-inited", i2c_bus->i2c_port, i2c_bus->ref_counter);
return ESP_OK;
}
esp_err_t ret = i2c_driver_deinit(i2c_bus->i2c_port);
I2C_BUS_CHECK(ret == ESP_OK, "deinit error", ret);
vSemaphoreDelete(i2c_bus->mutex);
*p_bus = NULL;
return ESP_OK;
}
uint8_t i2c_bus_scan(i2c_bus_handle_t bus_handle, uint8_t *buf, uint8_t num)
{
I2C_BUS_CHECK(bus_handle != NULL, "Handle error", 0);
i2c_bus_t *i2c_bus = (i2c_bus_t *)bus_handle;
I2C_BUS_INIT_CHECK(i2c_bus->is_init, 0);
uint8_t device_count = 0;
I2C_BUS_MUTEX_TAKE_MAX_DELAY(i2c_bus->mutex, 0);
for (uint8_t dev_address = 1; dev_address < 127; dev_address++) {
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, (dev_address << 1) | I2C_MASTER_WRITE, I2C_ACK_CHECK_EN);
i2c_master_stop(cmd);
esp_err_t ret = i2c_master_cmd_begin(i2c_bus->i2c_port, cmd, I2C_BUS_TICKS_TO_WAIT);
if (ret == ESP_OK) {
ESP_LOGI(TAG, "found i2c device address = 0x%02x", dev_address);
if (buf != NULL && device_count < num) {
*(buf + device_count) = dev_address;
}
device_count++;
}
i2c_cmd_link_delete(cmd);
}
I2C_BUS_MUTEX_GIVE(i2c_bus->mutex, 0);
return device_count;
}
uint32_t i2c_bus_get_current_clk_speed(i2c_bus_handle_t bus_handle)
{
I2C_BUS_CHECK(bus_handle != NULL, "Null Bus Handle", 0);
i2c_bus_t *i2c_bus = (i2c_bus_t *)bus_handle;
I2C_BUS_INIT_CHECK(i2c_bus->is_init, 0);
return i2c_bus->conf_active.master.clk_speed;
}
uint8_t i2c_bus_get_created_device_num(i2c_bus_handle_t bus_handle)
{
I2C_BUS_CHECK(bus_handle != NULL, "Null Bus Handle", 0);
i2c_bus_t *i2c_bus = (i2c_bus_t *)bus_handle;
I2C_BUS_INIT_CHECK(i2c_bus->is_init, 0);
return i2c_bus->ref_counter;
}
i2c_bus_device_handle_t i2c_bus_device_create(i2c_bus_handle_t bus_handle, uint8_t dev_addr, uint32_t clk_speed)
{
I2C_BUS_CHECK(bus_handle != NULL, "Null Bus Handle", NULL);
I2C_BUS_CHECK(clk_speed <= 400000, "clk_speed must <= 400000", NULL);
i2c_bus_t *i2c_bus = (i2c_bus_t *)bus_handle;
I2C_BUS_INIT_CHECK(i2c_bus->is_init, NULL);
i2c_bus_device_t *i2c_device = calloc(1, sizeof(i2c_bus_device_t));
I2C_BUS_CHECK(i2c_device != NULL, "calloc memory failed", NULL);
I2C_BUS_MUTEX_TAKE_MAX_DELAY(i2c_bus->mutex, NULL);
i2c_device->dev_addr = dev_addr;
i2c_device->conf = i2c_bus->conf_active;
/*if clk_speed == 0, current active clock speed will be used, else set a specified value*/
if (clk_speed != 0) {
i2c_device->conf.master.clk_speed = clk_speed;
}
i2c_device->i2c_bus = i2c_bus;
i2c_bus->ref_counter++;
I2C_BUS_MUTEX_GIVE(i2c_bus->mutex, NULL);
return (i2c_bus_device_handle_t)i2c_device;
}
esp_err_t i2c_bus_device_delete(i2c_bus_device_handle_t *p_dev_handle)
{
I2C_BUS_CHECK(p_dev_handle != NULL && *p_dev_handle != NULL, "Null Device Handle", ESP_ERR_INVALID_ARG);
i2c_bus_device_t *i2c_device = (i2c_bus_device_t *)(*p_dev_handle);
I2C_BUS_MUTEX_TAKE_MAX_DELAY(i2c_device->i2c_bus->mutex, ESP_ERR_TIMEOUT);
i2c_device->i2c_bus->ref_counter--;
I2C_BUS_MUTEX_GIVE(i2c_device->i2c_bus->mutex, ESP_FAIL);
free(i2c_device);
*p_dev_handle = NULL;
return ESP_OK;
}
uint8_t i2c_bus_device_get_address(i2c_bus_device_handle_t dev_handle)
{
I2C_BUS_CHECK(dev_handle != NULL, "device handle error", NULL_I2C_DEV_ADDR);
i2c_bus_device_t *i2c_device = (i2c_bus_device_t *)dev_handle;
return i2c_device->dev_addr;
}
esp_err_t i2c_bus_read_bytes(i2c_bus_device_handle_t dev_handle, uint8_t mem_address, size_t data_len, uint8_t *data)
{
return i2c_bus_read_reg8(dev_handle, mem_address, data_len, data);
}
esp_err_t i2c_bus_read_byte(i2c_bus_device_handle_t dev_handle, uint8_t mem_address, uint8_t *data)
{
return i2c_bus_read_reg8(dev_handle, mem_address, 1, data);
}
esp_err_t i2c_bus_read_bit(i2c_bus_device_handle_t dev_handle, uint8_t mem_address, uint8_t bit_num, uint8_t *data)
{
uint8_t byte = 0;
esp_err_t ret = i2c_bus_read_reg8(dev_handle, mem_address, 1, &byte);
*data = byte & (1 << bit_num);
*data = (*data != 0) ? 1 : 0;
return ret;
}
esp_err_t i2c_bus_read_bits(i2c_bus_device_handle_t dev_handle, uint8_t mem_address, uint8_t bit_start, uint8_t length, uint8_t *data)
{
uint8_t byte = 0;
esp_err_t ret = i2c_bus_read_byte(dev_handle, mem_address, &byte);
if (ret != ESP_OK) {
return ret;
}
uint8_t mask = ((1 << length) - 1) << (bit_start - length + 1);
byte &= mask;
byte >>= (bit_start - length + 1);
*data = byte;
return ret;
}
esp_err_t i2c_bus_write_byte(i2c_bus_device_handle_t dev_handle, uint8_t mem_address, uint8_t data)
{
return i2c_bus_write_reg8(dev_handle, mem_address, 1, &data);
}
esp_err_t i2c_bus_write_bytes(i2c_bus_device_handle_t dev_handle, uint8_t mem_address, size_t data_len, const uint8_t *data)
{
return i2c_bus_write_reg8(dev_handle, mem_address, data_len, data);
}
esp_err_t i2c_bus_write_bit(i2c_bus_device_handle_t dev_handle, uint8_t mem_address, uint8_t bit_num, uint8_t data)
{
uint8_t byte = 0;
esp_err_t ret = i2c_bus_read_byte(dev_handle, mem_address, &byte);
if (ret != ESP_OK) {
return ret;
}
byte = (data != 0) ? (byte | (1 << bit_num)) : (byte & ~(1 << bit_num));
return i2c_bus_write_byte(dev_handle, mem_address, byte);
}
esp_err_t i2c_bus_write_bits(i2c_bus_device_handle_t dev_handle, uint8_t mem_address, uint8_t bit_start, uint8_t length, uint8_t data)
{
uint8_t byte = 0;
esp_err_t ret = i2c_bus_read_byte(dev_handle, mem_address, &byte);
if (ret != ESP_OK) {
return ret;
}
uint8_t mask = ((1 << length) - 1) << (bit_start - length + 1);
data <<= (bit_start - length + 1); // shift data into correct position
data &= mask; // zero all non-important bits in data
byte &= ~(mask); // zero all important bits in existing byte
byte |= data; // combine data with existing byte
return i2c_bus_write_byte(dev_handle, mem_address, byte);
}
/**
* @brief I2C master send queued commands.
* This function will trigger sending all queued commands.
* The task will be blocked until all the commands have been sent out.
* If I2C_BUS_DYNAMIC_CONFIG enable, i2c_bus will dynamically check configs and re-install i2c driver before each transfer,
* hence multiple devices with different configs on a single bus can be supported.
* @note
* Only call this function in I2C master mode
*
* @param i2c_num I2C port number
* @param cmd_handle I2C command handler
* @param ticks_to_wait maximum wait ticks.
* @param conf pointer to I2C parameter settings
* @return esp_err_t
*/
inline static esp_err_t i2c_master_cmd_begin_with_conf(i2c_port_t i2c_num, i2c_cmd_handle_t cmd_handle, TickType_t ticks_to_wait, const i2c_config_t *conf)
{
esp_err_t ret;
#ifdef CONFIG_I2C_BUS_DYNAMIC_CONFIG
/*if configs changed, i2c driver will reinit with new configuration*/
if (conf != NULL && false == i2c_config_compare(i2c_num, conf)) {
ret = i2c_driver_reinit(i2c_num, conf);
I2C_BUS_CHECK(ret == ESP_OK, "reinit error", ret);
s_i2c_bus[i2c_num].conf_active = *conf;
}
#endif
ret = i2c_master_cmd_begin(i2c_num, cmd_handle, ticks_to_wait);
return ret;
}
/**************************************** Public Functions (Low level)*********************************************/
esp_err_t i2c_bus_cmd_begin(i2c_bus_device_handle_t dev_handle, i2c_cmd_handle_t cmd)
{
I2C_BUS_CHECK(dev_handle != NULL, "device handle error", ESP_ERR_INVALID_ARG);
I2C_BUS_CHECK(cmd != NULL, "I2C command error", ESP_ERR_INVALID_ARG);
i2c_bus_device_t *i2c_device = (i2c_bus_device_t *)dev_handle;
I2C_BUS_INIT_CHECK(i2c_device->i2c_bus->is_init, ESP_ERR_INVALID_STATE);
I2C_BUS_MUTEX_TAKE(i2c_device->i2c_bus->mutex, ESP_ERR_TIMEOUT);
esp_err_t ret = i2c_master_cmd_begin_with_conf(i2c_device->i2c_bus->i2c_port, cmd, I2C_BUS_TICKS_TO_WAIT, &i2c_device->conf);
I2C_BUS_MUTEX_GIVE(i2c_device->i2c_bus->mutex, ESP_FAIL);
return ret;
}
static esp_err_t i2c_bus_read_reg8(i2c_bus_device_handle_t dev_handle, uint8_t mem_address, size_t data_len, uint8_t *data)
{
I2C_BUS_CHECK(dev_handle != NULL, "device handle error", ESP_ERR_INVALID_ARG);
I2C_BUS_CHECK(data != NULL, "data pointer error", ESP_ERR_INVALID_ARG);
i2c_bus_device_t *i2c_device = (i2c_bus_device_t *)dev_handle;
I2C_BUS_INIT_CHECK(i2c_device->i2c_bus->is_init, ESP_ERR_INVALID_STATE);
I2C_BUS_MUTEX_TAKE(i2c_device->i2c_bus->mutex, ESP_ERR_TIMEOUT);
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
if (mem_address != NULL_I2C_MEM_ADDR) {
i2c_master_start(cmd);
i2c_master_write_byte(cmd, (i2c_device->dev_addr << 1) | I2C_MASTER_WRITE, I2C_ACK_CHECK_EN);
i2c_master_write_byte(cmd, mem_address, I2C_ACK_CHECK_EN);
}
i2c_master_start(cmd);
i2c_master_write_byte(cmd, (i2c_device->dev_addr << 1) | I2C_MASTER_READ, I2C_ACK_CHECK_EN);
i2c_master_read(cmd, data, data_len, I2C_MASTER_LAST_NACK);
i2c_master_stop(cmd);
esp_err_t ret = i2c_master_cmd_begin_with_conf(i2c_device->i2c_bus->i2c_port, cmd, I2C_BUS_TICKS_TO_WAIT, &i2c_device->conf);
i2c_cmd_link_delete(cmd);
I2C_BUS_MUTEX_GIVE(i2c_device->i2c_bus->mutex, ESP_FAIL);
return ret;
}
esp_err_t i2c_bus_read_reg16(i2c_bus_device_handle_t dev_handle, uint16_t mem_address, size_t data_len, uint8_t *data)
{
I2C_BUS_CHECK(dev_handle != NULL, "device handle error", ESP_ERR_INVALID_ARG);
I2C_BUS_CHECK(data != NULL, "data pointer error", ESP_ERR_INVALID_ARG);
i2c_bus_device_t *i2c_device = (i2c_bus_device_t *)dev_handle;
I2C_BUS_INIT_CHECK(i2c_device->i2c_bus->is_init, ESP_ERR_INVALID_STATE);
uint8_t memAddress8[2];
memAddress8[0] = (uint8_t)((mem_address >> 8) & 0x00FF);
memAddress8[1] = (uint8_t)(mem_address & 0x00FF);
I2C_BUS_MUTEX_TAKE(i2c_device->i2c_bus->mutex, ESP_ERR_TIMEOUT);
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
if (mem_address != NULL_I2C_MEM_ADDR) {
i2c_master_start(cmd);
i2c_master_write_byte(cmd, (i2c_device->dev_addr << 1) | I2C_MASTER_WRITE, I2C_ACK_CHECK_EN);
i2c_master_write(cmd, memAddress8, 2, I2C_ACK_CHECK_EN);
}
i2c_master_start(cmd);
i2c_master_write_byte(cmd, (i2c_device->dev_addr << 1) | I2C_MASTER_READ, I2C_ACK_CHECK_EN);
i2c_master_read(cmd, data, data_len, I2C_MASTER_LAST_NACK);
i2c_master_stop(cmd);
esp_err_t ret = i2c_master_cmd_begin_with_conf(i2c_device->i2c_bus->i2c_port, cmd, I2C_BUS_TICKS_TO_WAIT, &i2c_device->conf);
i2c_cmd_link_delete(cmd);
I2C_BUS_MUTEX_GIVE(i2c_device->i2c_bus->mutex, ESP_FAIL);
return ret;
}
static esp_err_t i2c_bus_write_reg8(i2c_bus_device_handle_t dev_handle, uint8_t mem_address, size_t data_len, const uint8_t *data)
{
I2C_BUS_CHECK(dev_handle != NULL, "device handle error", ESP_ERR_INVALID_ARG);
I2C_BUS_CHECK(data != NULL, "data pointer error", ESP_ERR_INVALID_ARG);
i2c_bus_device_t *i2c_device = (i2c_bus_device_t *)dev_handle;
I2C_BUS_INIT_CHECK(i2c_device->i2c_bus->is_init, ESP_ERR_INVALID_STATE);
I2C_BUS_MUTEX_TAKE(i2c_device->i2c_bus->mutex, ESP_ERR_TIMEOUT);
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, (i2c_device->dev_addr << 1) | I2C_MASTER_WRITE, I2C_ACK_CHECK_EN);
if (mem_address != NULL_I2C_MEM_ADDR) {
i2c_master_write_byte(cmd, mem_address, I2C_ACK_CHECK_EN);
}
i2c_master_write(cmd, (uint8_t *)data, data_len, I2C_ACK_CHECK_EN);
i2c_master_stop(cmd);
esp_err_t ret = i2c_master_cmd_begin_with_conf(i2c_device->i2c_bus->i2c_port, cmd, I2C_BUS_TICKS_TO_WAIT, &i2c_device->conf);
i2c_cmd_link_delete(cmd);
I2C_BUS_MUTEX_GIVE(i2c_device->i2c_bus->mutex, ESP_FAIL);
return ret;
}
esp_err_t i2c_bus_write_reg16(i2c_bus_device_handle_t dev_handle, uint16_t mem_address, size_t data_len, const uint8_t *data)
{
I2C_BUS_CHECK(dev_handle != NULL, "device handle error", ESP_ERR_INVALID_ARG);
I2C_BUS_CHECK(data != NULL, "data pointer error", ESP_ERR_INVALID_ARG);
i2c_bus_device_t *i2c_device = (i2c_bus_device_t *)dev_handle;
I2C_BUS_INIT_CHECK(i2c_device->i2c_bus->is_init, ESP_ERR_INVALID_STATE);
uint8_t memAddress8[2];
memAddress8[0] = (uint8_t)((mem_address >> 8) & 0x00FF);
memAddress8[1] = (uint8_t)(mem_address & 0x00FF);
I2C_BUS_MUTEX_TAKE(i2c_device->i2c_bus->mutex, ESP_ERR_TIMEOUT);
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, (i2c_device->dev_addr << 1) | I2C_MASTER_WRITE, I2C_ACK_CHECK_EN);
if (mem_address != NULL_I2C_MEM_ADDR) {
i2c_master_write(cmd, memAddress8, 2, I2C_ACK_CHECK_EN);
}
i2c_master_write(cmd, (uint8_t *)data, data_len, I2C_ACK_CHECK_EN);
i2c_master_stop(cmd);
esp_err_t ret = i2c_master_cmd_begin_with_conf(i2c_device->i2c_bus->i2c_port, cmd, I2C_BUS_TICKS_TO_WAIT, &i2c_device->conf);
i2c_cmd_link_delete(cmd);
I2C_BUS_MUTEX_GIVE(i2c_device->i2c_bus->mutex, ESP_FAIL);
return ret;
}
/**************************************** Private Functions*********************************************/
static esp_err_t i2c_driver_reinit(i2c_port_t port, const i2c_config_t *conf)
{
I2C_BUS_CHECK(port < I2C_NUM_MAX, "i2c port error", ESP_ERR_INVALID_ARG);
I2C_BUS_CHECK(conf != NULL, "pointer = NULL error", ESP_ERR_INVALID_ARG);
if (s_i2c_bus[port].is_init) {
i2c_driver_delete(port);
s_i2c_bus[port].is_init = false;
ESP_LOGI(TAG, "i2c%d bus deinited", port);
}
esp_err_t ret = i2c_param_config(port, conf);
I2C_BUS_CHECK(ret == ESP_OK, "i2c param config failed", ret);
ret = i2c_driver_install(port, conf->mode, I2C_BUS_MASTER_BUF_LEN, I2C_BUS_MASTER_BUF_LEN, I2C_BUS_FLG_DEFAULT);
I2C_BUS_CHECK(ret == ESP_OK, "i2c driver install failed", ret);
s_i2c_bus[port].is_init = true;
ESP_LOGI(TAG, "i2c%d bus inited", port);
return ESP_OK;
}
static esp_err_t i2c_driver_deinit(i2c_port_t port)
{
I2C_BUS_CHECK(port < I2C_NUM_MAX, "i2c port error", ESP_ERR_INVALID_ARG);
I2C_BUS_CHECK(s_i2c_bus[port].is_init == true, "i2c not inited", ESP_ERR_INVALID_STATE);
i2c_driver_delete(port); //always return ESP_OK
s_i2c_bus[port].is_init = false;
ESP_LOGI(TAG,"i2c%d bus deinited",port);
return ESP_OK;
}
/**
* @brief compare with active i2c_bus configuration
*
* @param port choose which i2c_port's configuration will be compared
* @param conf new configuration
* @return true new configuration is equal to active configuration
* @return false new configuration is not equal to active configuration
*/
inline static bool i2c_config_compare(i2c_port_t port, const i2c_config_t *conf)
{
if (s_i2c_bus[port].conf_active.master.clk_speed == conf->master.clk_speed
&& s_i2c_bus[port].conf_active.sda_io_num == conf->sda_io_num
&& s_i2c_bus[port].conf_active.scl_io_num == conf->scl_io_num
&& s_i2c_bus[port].conf_active.scl_pullup_en == conf->scl_pullup_en
&& s_i2c_bus[port].conf_active.sda_pullup_en == conf->sda_pullup_en) {
return true;
}
return false;
}

596
components/bus/i2s_lcd_esp32_driver.c

@ -0,0 +1,596 @@
// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "sdkconfig.h"
#if CONFIG_IDF_TARGET_ESP32
#include <stdio.h>
#include <string.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/queue.h"
#include "esp_heap_caps.h"
#include "esp32/rom/lldesc.h"
#include "soc/dport_access.h"
#include "soc/dport_reg.h"
#include "soc/i2s_struct.h"
#include "hal/gpio_ll.h"
#include "esp_log.h"
#include "i2s_lcd_driver.h"
static const char *TAG = "ESP32_I2S_LCD";
#define I2S_CHECK(a, str, ret) if (!(a)) { \
ESP_LOGE(TAG,"%s:%d (%s):%s", __FILE__, __LINE__, __FUNCTION__, str); \
return (ret); \
}
#define LCD_CAM_DMA_NODE_BUFFER_MAX_SIZE (4000) // 4-byte aligned
#define LCD_DATA_MAX_WIDTH (24) /*!< Maximum width of LCD data bus */
typedef struct {
uint32_t dma_buffer_size;
uint32_t dma_half_buffer_size;
uint32_t dma_node_buffer_size;
uint32_t dma_node_cnt;
uint32_t dma_half_node_cnt;
lldesc_t *dma;
uint8_t *dma_buffer;
QueueHandle_t event_queue;
uint8_t width;
bool swap_data;
intr_handle_t lcd_cam_intr_handle;
i2s_dev_t *i2s_dev;
} i2s_lcd_obj_t;
typedef struct {
void (*i2s_write_data_func)(i2s_lcd_obj_t *i2s_lcd_obj, uint8_t *data, size_t len);
int rs_io_num;
i2s_lcd_obj_t *i2s_lcd_obj;
SemaphoreHandle_t mutex;
} i2s_lcd_driver_t;
static void IRAM_ATTR i2s_isr(void *arg)
{
BaseType_t HPTaskAwoken = pdFALSE;
i2s_lcd_obj_t *i2s_lcd_obj = (i2s_lcd_obj_t *)arg;
i2s_dev_t *i2s_dev = i2s_lcd_obj->i2s_dev;
typeof(i2s_dev->int_st) status = i2s_dev->int_st;
i2s_dev->int_clr.val = status.val;
if (status.val == 0) {
return;
}
if (status.out_eof) {
xQueueSendFromISR(i2s_lcd_obj->event_queue, (void *)&status.val, &HPTaskAwoken);
}
if (HPTaskAwoken == pdTRUE) {
portYIELD_FROM_ISR();
}
}
static void lcd_dma_set_int(i2s_lcd_obj_t *i2s_lcd_obj)
{
// Generate a data DMA linked list
for (int x = 0; x < i2s_lcd_obj->dma_node_cnt; x++) {
i2s_lcd_obj->dma[x].size = i2s_lcd_obj->dma_node_buffer_size;
i2s_lcd_obj->dma[x].length = i2s_lcd_obj->dma_node_buffer_size;
i2s_lcd_obj->dma[x].buf = (i2s_lcd_obj->dma_buffer + i2s_lcd_obj->dma_node_buffer_size * x);
i2s_lcd_obj->dma[x].eof = !((x + 1) % i2s_lcd_obj->dma_half_node_cnt);
i2s_lcd_obj->dma[x].empty = (uint32_t)&i2s_lcd_obj->dma[(x + 1) % i2s_lcd_obj->dma_node_cnt];
}
i2s_lcd_obj->dma[i2s_lcd_obj->dma_half_node_cnt - 1].empty = (uint32_t)NULL;
i2s_lcd_obj->dma[i2s_lcd_obj->dma_node_cnt - 1].empty = (uint32_t)NULL;
}
static void lcd_dma_set_left(i2s_lcd_obj_t *i2s_lcd_obj, int pos, size_t len)
{
int end_pos = 0, size = 0;
// Processing data length is an integer multiple of i2s_lcd_obj->dma_node_buffer_size
if (len % i2s_lcd_obj->dma_node_buffer_size) {
end_pos = (pos % 2) * i2s_lcd_obj->dma_half_node_cnt + len / i2s_lcd_obj->dma_node_buffer_size;
size = len % i2s_lcd_obj->dma_node_buffer_size;
} else {
end_pos = (pos % 2) * i2s_lcd_obj->dma_half_node_cnt + len / i2s_lcd_obj->dma_node_buffer_size - 1;
size = i2s_lcd_obj->dma_node_buffer_size;
}
// Process the tail node to make it a DMA tail
i2s_lcd_obj->dma[end_pos].size = size;
i2s_lcd_obj->dma[end_pos].length = size;
i2s_lcd_obj->dma[end_pos].eof = 1;
i2s_lcd_obj->dma[end_pos].empty = (uint32_t)NULL;
}
static void lcd_i2s_start(i2s_dev_t *i2s_dev, uint8_t fifo_mode, uint32_t addr, size_t len)
{
while (!i2s_dev->state.tx_idle);
i2s_dev->fifo_conf.tx_fifo_mod = fifo_mode;
i2s_dev->conf.tx_start = 0;
i2s_dev->conf.tx_reset = 1;
i2s_dev->conf.tx_reset = 0;
i2s_dev->lc_conf.out_rst = 1;
i2s_dev->lc_conf.out_rst = 0;
i2s_dev->conf.tx_fifo_reset = 1;
i2s_dev->conf.tx_fifo_reset = 0;
i2s_dev->out_link.addr = addr;
i2s_dev->out_link.start = 1;
ets_delay_us(1);
i2s_dev->conf.tx_start = 1;
}
static void i2s_write_8bit_data(i2s_lcd_obj_t *i2s_lcd_obj, uint8_t *data, size_t len)
{
int event = 0;
int x = 0, y = 0, left = 0, cnt = 0;
if (len <= 0) {
ESP_LOGE(TAG, "wrong len!");
return;
}
len = len * 2;
lcd_dma_set_int(i2s_lcd_obj);
uint8_t fifo_mode = 1;
// Start signal
xQueueSend(i2s_lcd_obj->event_queue, &event, 0);
cnt = len / i2s_lcd_obj->dma_half_buffer_size;
// Process a complete piece of data, ping-pong operation
for (x = 0; x < cnt; x++) {
uint8_t *out = (uint8_t *)i2s_lcd_obj->dma[(x % 2) * i2s_lcd_obj->dma_half_node_cnt].buf;
uint8_t *in = data;
if (!i2s_lcd_obj->swap_data) { // data will be swapped when fifo_mode=1, so negate the lcd.swap_data
for (y = 0; y < i2s_lcd_obj->dma_half_buffer_size; y += 4) {
out[y + 3] = in[(y >> 1) + 0];
out[y + 1] = in[(y >> 1) + 1];
}
} else {
for (y = 0; y < i2s_lcd_obj->dma_half_buffer_size; y += 4) {
out[y + 1] = in[(y >> 1) + 0];
out[y + 3] = in[(y >> 1) + 1];
}
}
data += i2s_lcd_obj->dma_half_buffer_size >> 1;
xQueueReceive(i2s_lcd_obj->event_queue, (void *)&event, portMAX_DELAY);
lcd_i2s_start(i2s_lcd_obj->i2s_dev, fifo_mode, ((uint32_t)&i2s_lcd_obj->dma[(x % 2) * i2s_lcd_obj->dma_half_node_cnt]) & 0xfffff, i2s_lcd_obj->dma_half_buffer_size);
}
left = len % i2s_lcd_obj->dma_half_buffer_size;
// Process remaining incomplete segment data
while (left) {
uint8_t *out = (uint8_t *)i2s_lcd_obj->dma[(x % 2) * i2s_lcd_obj->dma_half_node_cnt].buf;
uint8_t *in = data;
if (left > 2) {
cnt = left - left % 4;
left = left % 4;
data += cnt >> 1;
if (!i2s_lcd_obj->swap_data) { // data will be swapped when fifo_mode=1, so negate the lcd.swap_data
for (y = 0; y < cnt; y += 4) {
out[y + 3] = in[(y >> 1) + 0];
out[y + 1] = in[(y >> 1) + 1];
}
} else {
for (y = 0; y < cnt; y += 4) {
out[y + 1] = in[(y >> 1) + 0];
out[y + 3] = in[(y >> 1) + 1];
}
}
} else {
cnt = 4;
left = 0;
fifo_mode = 3;
out[3] = in[0];
}
// printf("[");
// for (size_t i = 0; i < cnt; i++) {
// printf("%02x, ", out[i]);
// } printf("]\n");
lcd_dma_set_left(i2s_lcd_obj, x, cnt);
xQueueReceive(i2s_lcd_obj->event_queue, (void *)&event, portMAX_DELAY);
lcd_i2s_start(i2s_lcd_obj->i2s_dev, fifo_mode, ((uint32_t)&i2s_lcd_obj->dma[(x % 2) * i2s_lcd_obj->dma_half_node_cnt]) & 0xfffff, cnt);
x++;
}
xQueueReceive(i2s_lcd_obj->event_queue, (void *)&event, portMAX_DELAY);
}
static void i2s_write_16bit_data(i2s_lcd_obj_t *i2s_lcd_obj, uint8_t *data, size_t len)
{
int event = 0;
int x = 0, y = 0, left = 0, cnt = 0;
if (len <= 0 || len % 2 != 0) {
ESP_LOGE(TAG, "wrong len!");
return;
}
lcd_dma_set_int(i2s_lcd_obj);
uint8_t fifo_mode = 1;
// Start signal
xQueueSend(i2s_lcd_obj->event_queue, &event, 0);
cnt = len / i2s_lcd_obj->dma_half_buffer_size;
// Process a complete piece of data, ping-pong operation
for (x = 0; x < cnt; x++) {
uint8_t *out = (uint8_t *)i2s_lcd_obj->dma[(x % 2) * i2s_lcd_obj->dma_half_node_cnt].buf;
uint8_t *in = data;
if (i2s_lcd_obj->swap_data) {
for (y = 0; y < i2s_lcd_obj->dma_half_buffer_size; y += 4) {
out[y + 3] = in[y + 0];
out[y + 2] = in[y + 1];
out[y + 1] = in[y + 2];
out[y + 0] = in[y + 3];
}
} else {
for (y = 0; y < i2s_lcd_obj->dma_half_buffer_size; y += 4) {
out[y + 2] = in[y + 0];
out[y + 3] = in[y + 1];
out[y + 0] = in[y + 2];
out[y + 1] = in[y + 3];
}
}
data += i2s_lcd_obj->dma_half_buffer_size;
xQueueReceive(i2s_lcd_obj->event_queue, (void *)&event, portMAX_DELAY);
lcd_i2s_start(i2s_lcd_obj->i2s_dev, fifo_mode, ((uint32_t)&i2s_lcd_obj->dma[(x % 2) * i2s_lcd_obj->dma_half_node_cnt]) & 0xfffff, i2s_lcd_obj->dma_half_buffer_size);
}
left = len % i2s_lcd_obj->dma_half_buffer_size;
// Process remaining incomplete segment data
while (left) {
uint8_t *out = (uint8_t *)i2s_lcd_obj->dma[(x % 2) * i2s_lcd_obj->dma_half_node_cnt].buf;
uint8_t *in = data;
if (left > 2) {
cnt = left - left % 4;
left = left % 4;
data += cnt;
if (i2s_lcd_obj->swap_data) {
for (y = 0; y < cnt; y += 4) {
out[y + 3] = in[y + 0];
out[y + 2] = in[y + 1];
out[y + 1] = in[y + 2];
out[y + 0] = in[y + 3];
}
} else {
for (y = 0; y < cnt; y += 4) {
out[y + 2] = in[y + 0];
out[y + 3] = in[y + 1];
out[y + 0] = in[y + 2];
out[y + 1] = in[y + 3];
}
}
} else {
cnt = 4;
left = 0;
fifo_mode = 3;
if (i2s_lcd_obj->swap_data) {
out[3] = in[0];
out[2] = in[1];
} else {
out[2] = in[0];
out[3] = in[1];
}
}
lcd_dma_set_left(i2s_lcd_obj, x, cnt);
xQueueReceive(i2s_lcd_obj->event_queue, (void *)&event, portMAX_DELAY);
lcd_i2s_start(i2s_lcd_obj->i2s_dev, fifo_mode, ((uint32_t)&i2s_lcd_obj->dma[(x % 2) * i2s_lcd_obj->dma_half_node_cnt]) & 0xfffff, cnt);
x++;
}
xQueueReceive(i2s_lcd_obj->event_queue, (void *)&event, portMAX_DELAY);
}
static esp_err_t i2s_lcd_reg_config(i2s_dev_t *i2s_dev, uint16_t data_width, uint32_t clk_freq)
{
// Configure the clock
i2s_dev->clkm_conf.clkm_div_num = 2; // 160MHz / 2 = 80MHz
i2s_dev->clkm_conf.clkm_div_b = 0;
i2s_dev->clkm_conf.clkm_div_a = 10;
i2s_dev->clkm_conf.clk_en = 1;
i2s_dev->conf.val = 0;
i2s_dev->fifo_conf.val = 0;
i2s_dev->fifo_conf.dscr_en = 1;
i2s_dev->conf2.lcd_en = 1;
i2s_dev->conf2.camera_en = 1;
i2s_dev->lc_conf.ahbm_fifo_rst = 1;
i2s_dev->lc_conf.ahbm_fifo_rst = 0;
i2s_dev->lc_conf.ahbm_rst = 1;
i2s_dev->lc_conf.ahbm_rst = 0;
i2s_dev->lc_conf.check_owner = 0;
i2s_dev->lc_conf.out_loop_test = 0;
i2s_dev->lc_conf.out_auto_wrback = 0;
i2s_dev->lc_conf.out_data_burst_en = 1;
i2s_dev->lc_conf.out_no_restart_clr = 0;
i2s_dev->lc_conf.indscr_burst_en = 0;
i2s_dev->lc_conf.out_eof_mode = 1;
i2s_dev->timing.val = 0;
i2s_dev->int_ena.val = 0;
i2s_dev->int_clr.val = ~0;
// Configure sampling rate
i2s_dev->sample_rate_conf.tx_bck_div_num = 40000000 / clk_freq; // Fws = Fbck / 2
i2s_dev->sample_rate_conf.tx_bits_mod = (data_width == 8) ? 0 : 1;
// Configuration data format
i2s_dev->conf.tx_start = 0;
i2s_dev->conf.tx_reset = 1;
i2s_dev->conf.tx_reset = 0;
i2s_dev->conf.tx_fifo_reset = 1;
i2s_dev->conf.tx_fifo_reset = 0;
i2s_dev->conf.tx_slave_mod = 0;
i2s_dev->conf.tx_right_first = 1; // Must be set to 1, otherwise the clock line will change during reset
i2s_dev->conf.tx_msb_right = 0;
i2s_dev->conf.tx_short_sync = 0;
i2s_dev->conf.tx_mono = 0;
i2s_dev->conf.tx_msb_shift = 0;
i2s_dev->conf1.tx_pcm_bypass = 1;
i2s_dev->conf1.tx_stop_en = 1;
i2s_dev->conf_chan.tx_chan_mod = 1;
i2s_dev->fifo_conf.tx_fifo_mod_force_en = 1;
i2s_dev->fifo_conf.tx_data_num = 32;
i2s_dev->fifo_conf.tx_fifo_mod = 1;
i2s_dev->lc_conf.out_rst = 1;
i2s_dev->lc_conf.out_rst = 0;
i2s_dev->int_ena.out_eof = 1;
return ESP_OK;
}
static esp_err_t lcd_set_pin(const i2s_lcd_config_t *config)
{
PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[config->pin_num_wr], PIN_FUNC_GPIO);
gpio_set_direction(config->pin_num_wr, GPIO_MODE_OUTPUT);
gpio_set_pull_mode(config->pin_num_wr, GPIO_FLOATING);
gpio_matrix_out(config->pin_num_wr, I2S0O_WS_OUT_IDX, true, false);
for (int i = 0; i < config->data_width; i++) {
PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[config->pin_data_num[i]], PIN_FUNC_GPIO);
gpio_set_direction(config->pin_data_num[i], GPIO_MODE_OUTPUT);
gpio_set_pull_mode(config->pin_data_num[i], GPIO_FLOATING);
// High bit aligned, OUT23 is always the highest bit
gpio_matrix_out(config->pin_data_num[i], I2S0O_DATA_OUT0_IDX + (LCD_DATA_MAX_WIDTH - config->data_width) + i, false, false);
}
return ESP_OK;
}
static esp_err_t lcd_dma_config(i2s_lcd_obj_t *i2s_lcd_obj, uint32_t max_dma_buffer_size)
{
int cnt = 0;
if (LCD_CAM_DMA_NODE_BUFFER_MAX_SIZE % 2 != 0) {
ESP_LOGE(TAG, "ESP32 only supports 2-byte aligned data length");
return ESP_FAIL;
}
if (max_dma_buffer_size >= LCD_CAM_DMA_NODE_BUFFER_MAX_SIZE * 2) {
i2s_lcd_obj->dma_node_buffer_size = LCD_CAM_DMA_NODE_BUFFER_MAX_SIZE;
for (cnt = 0; cnt < max_dma_buffer_size - 8; cnt++) { // Find a buffer size that can divide dma_size
if ((max_dma_buffer_size - cnt) % (i2s_lcd_obj->dma_node_buffer_size * 2) == 0) {
break;
}
}
i2s_lcd_obj->dma_buffer_size = max_dma_buffer_size - cnt;
} else {
i2s_lcd_obj->dma_node_buffer_size = max_dma_buffer_size / 2;
i2s_lcd_obj->dma_buffer_size = i2s_lcd_obj->dma_node_buffer_size * 2;
}
i2s_lcd_obj->dma_half_buffer_size = i2s_lcd_obj->dma_buffer_size / 2;
i2s_lcd_obj->dma_node_cnt = (i2s_lcd_obj->dma_buffer_size) / i2s_lcd_obj->dma_node_buffer_size; // Number of DMA nodes
i2s_lcd_obj->dma_half_node_cnt = i2s_lcd_obj->dma_node_cnt / 2;
ESP_LOGI(TAG, "lcd_buffer_size: %d, lcd_dma_size: %d, lcd_dma_node_cnt: %d", i2s_lcd_obj->dma_buffer_size, i2s_lcd_obj->dma_node_buffer_size, i2s_lcd_obj->dma_node_cnt);
i2s_lcd_obj->dma = (lldesc_t *)heap_caps_calloc(i2s_lcd_obj->dma_node_cnt, sizeof(lldesc_t), MALLOC_CAP_DMA | MALLOC_CAP_8BIT);
i2s_lcd_obj->dma_buffer = (uint8_t *)heap_caps_calloc(i2s_lcd_obj->dma_buffer_size, sizeof(uint8_t), MALLOC_CAP_DMA | MALLOC_CAP_8BIT);
return ESP_OK;
}
esp_err_t lcd_cam_deinit(i2s_lcd_driver_t *drv)
{
if (!drv->i2s_lcd_obj) {
return ESP_FAIL;
}
if (drv->i2s_lcd_obj->event_queue) {
vQueueDelete(drv->i2s_lcd_obj->event_queue);
}
if (drv->i2s_lcd_obj->dma) {
heap_caps_free(drv->i2s_lcd_obj->dma);
}
if (drv->i2s_lcd_obj->dma_buffer) {
heap_caps_free(drv->i2s_lcd_obj->dma_buffer);
}
if (drv->i2s_lcd_obj->lcd_cam_intr_handle) {
esp_intr_free(drv->i2s_lcd_obj->lcd_cam_intr_handle);
}
heap_caps_free(drv->i2s_lcd_obj);
drv->i2s_lcd_obj = NULL;
return ESP_OK;
}
static esp_err_t lcd_cam_init(i2s_lcd_driver_t *drv, const i2s_lcd_config_t *config)
{
esp_err_t ret = ESP_OK;
i2s_lcd_obj_t *i2s_lcd_obj = (i2s_lcd_obj_t *)heap_caps_calloc(1, sizeof(i2s_lcd_obj_t), MALLOC_CAP_DMA);
if (i2s_lcd_obj == NULL) {
ESP_LOGE(TAG, "lcd_cam object malloc failed");
return ESP_ERR_NO_MEM;
}
drv->i2s_lcd_obj = i2s_lcd_obj;
if (I2S_NUM_0 == config->i2s_port) {
i2s_lcd_obj->i2s_dev = &I2S0;
periph_module_enable(PERIPH_I2S0_MODULE);
ESP_LOGI(TAG, "Enable I2S0");
} else if (I2S_NUM_1 == config->i2s_port) {
i2s_lcd_obj->i2s_dev = &I2S1;
periph_module_enable(PERIPH_I2S1_MODULE);
ESP_LOGI(TAG, "Enable I2S1");
} else {
ESP_LOGE(TAG, "Designated I2S peripheral not found");
}
do {
ret |= i2s_lcd_reg_config(i2s_lcd_obj->i2s_dev, config->data_width, config->clk_freq);
if (ret != ESP_OK) {
ESP_LOGE(TAG, "lcd_cam config fail!");
break;
}
ret |= lcd_set_pin(config);
ret |= lcd_dma_config(i2s_lcd_obj, config->buffer_size);
if (ret != ESP_OK) {
ESP_LOGE(TAG, "lcd config fail!");
break;
}
i2s_lcd_obj->event_queue = xQueueCreate(1, sizeof(int));
i2s_lcd_obj->width = config->data_width;
i2s_lcd_obj->swap_data = config->swap_data;;
if (i2s_lcd_obj->event_queue == NULL) {
ESP_LOGE(TAG, "lcd config fail!");
break;
}
if (I2S_NUM_0 == config->i2s_port) {
ret |= esp_intr_alloc(ETS_I2S0_INTR_SOURCE, ESP_INTR_FLAG_LOWMED | ESP_INTR_FLAG_IRAM, i2s_isr, i2s_lcd_obj, &i2s_lcd_obj->lcd_cam_intr_handle);
} else if (I2S_NUM_1 == config->i2s_port) {
ret |= esp_intr_alloc(ETS_I2S1_INTR_SOURCE, ESP_INTR_FLAG_LOWMED | ESP_INTR_FLAG_IRAM, i2s_isr, i2s_lcd_obj, &i2s_lcd_obj->lcd_cam_intr_handle);
}
if (ret != ESP_OK) {
ESP_LOGE(TAG, "lcd_cam intr alloc fail!");
break;
}
ESP_LOGI(TAG, "i2s lcd driver init ok");
return ESP_OK;
} while (0);
lcd_cam_deinit(drv);
return ESP_FAIL;
}
/**< Public functions */
i2s_lcd_handle_t i2s_lcd_driver_init(const i2s_lcd_config_t *config)
{
I2S_CHECK(NULL != config, "config pointer invalid", NULL);
I2S_CHECK(GPIO_IS_VALID_OUTPUT_GPIO(config->pin_num_wr), "GPIO WR invalid", NULL);
I2S_CHECK(GPIO_IS_VALID_OUTPUT_GPIO(config->pin_num_rs), "GPIO RS invalid", NULL);
I2S_CHECK(config->data_width > 0 && config->data_width <= 16, "Bit width out of range", NULL);
I2S_CHECK(0 == (config->data_width % 8), "Bit width must be a multiple of 8", NULL);
uint64_t pin_mask = 0;
for (size_t i = 0; i < config->data_width; i++) {
uint64_t mask = 1ULL << config->pin_data_num[i];
I2S_CHECK(!(pin_mask & mask), "Data bus GPIO has a duplicate", NULL);
I2S_CHECK(GPIO_IS_VALID_OUTPUT_GPIO(config->pin_data_num[i]), "Data bus gpio invalid", NULL);
pin_mask |= mask;
}
i2s_lcd_driver_t *i2s_lcd_drv = (i2s_lcd_driver_t *)heap_caps_malloc(sizeof(i2s_lcd_driver_t), MALLOC_CAP_INTERNAL | MALLOC_CAP_8BIT);
I2S_CHECK(NULL != i2s_lcd_drv, "Error malloc handle of i2s lcd driver", NULL);
esp_err_t ret = lcd_cam_init(i2s_lcd_drv, config);
if (ESP_OK != ret) {
ESP_LOGE(TAG, "%s:%d (%s):%s", __FILE__, __LINE__, __FUNCTION__, "i2s lcd driver initialize failed");
heap_caps_free(i2s_lcd_drv);
return NULL;
}
i2s_lcd_drv->mutex = xSemaphoreCreateMutex();
if (i2s_lcd_drv->mutex == NULL) {
ESP_LOGE(TAG, "%s:%d (%s):%s", __FILE__, __LINE__, __FUNCTION__, "lcd create mutex failed");
lcd_cam_deinit(i2s_lcd_drv);
heap_caps_free(i2s_lcd_drv);
return NULL;
}
if (8 == config->data_width) {
i2s_lcd_drv->i2s_write_data_func = i2s_write_8bit_data;
} else if (16 == config->data_width) {
i2s_lcd_drv->i2s_write_data_func = i2s_write_16bit_data;
}
if (config->pin_num_cs >= 0) {
gpio_pad_select_gpio(config->pin_num_cs);
gpio_set_direction(config->pin_num_cs, GPIO_MODE_OUTPUT);
gpio_set_level(config->pin_num_cs, 0);
}
gpio_pad_select_gpio(config->pin_num_rs);
gpio_set_direction(config->pin_num_rs, GPIO_MODE_OUTPUT);
i2s_lcd_drv->rs_io_num = config->pin_num_rs;
return (i2s_lcd_handle_t)i2s_lcd_drv;
}
esp_err_t i2s_lcd_driver_deinit(i2s_lcd_handle_t handle)
{
i2s_lcd_driver_t *i2s_lcd_drv = (i2s_lcd_driver_t *)handle;
I2S_CHECK(NULL != i2s_lcd_drv, "handle pointer invalid", ESP_ERR_INVALID_ARG);
lcd_cam_deinit(i2s_lcd_drv);
vSemaphoreDelete(i2s_lcd_drv->mutex);
heap_caps_free(handle);
return ESP_OK;
}
esp_err_t i2s_lcd_write_data(i2s_lcd_handle_t handle, uint16_t data)
{
i2s_lcd_driver_t *i2s_lcd_drv = (i2s_lcd_driver_t *)handle;
I2S_CHECK(NULL != i2s_lcd_drv, "handle pointer invalid", ESP_ERR_INVALID_ARG);
i2s_lcd_drv->i2s_write_data_func(i2s_lcd_drv->i2s_lcd_obj, (uint8_t *)&data, i2s_lcd_drv->i2s_lcd_obj->width == 16 ? 2 : 1);
return ESP_OK;
}
esp_err_t i2s_lcd_write_cmd(i2s_lcd_handle_t handle, uint16_t cmd)
{
i2s_lcd_driver_t *i2s_lcd_drv = (i2s_lcd_driver_t *)handle;
I2S_CHECK(NULL != i2s_lcd_drv, "handle pointer invalid", ESP_ERR_INVALID_ARG);
gpio_set_level(i2s_lcd_drv->rs_io_num, LCD_CMD_LEV);
i2s_lcd_drv->i2s_write_data_func(i2s_lcd_drv->i2s_lcd_obj, (uint8_t *)&cmd, i2s_lcd_drv->i2s_lcd_obj->width == 16 ? 2 : 1);
gpio_set_level(i2s_lcd_drv->rs_io_num, LCD_DATA_LEV);
return ESP_OK;
}
esp_err_t i2s_lcd_write(i2s_lcd_handle_t handle, const uint8_t *data, uint32_t length)
{
i2s_lcd_driver_t *i2s_lcd_drv = (i2s_lcd_driver_t *)handle;
I2S_CHECK(NULL != i2s_lcd_drv, "handle pointer invalid", ESP_ERR_INVALID_ARG);
i2s_lcd_drv->i2s_write_data_func(i2s_lcd_drv->i2s_lcd_obj, (uint8_t *)data, length);
return ESP_OK;
}
esp_err_t i2s_lcd_acquire(i2s_lcd_handle_t handle)
{
i2s_lcd_driver_t *i2s_lcd_drv = (i2s_lcd_driver_t *)handle;
I2S_CHECK(NULL != i2s_lcd_drv, "handle pointer invalid", ESP_ERR_INVALID_ARG);
BaseType_t ret = xSemaphoreTake(i2s_lcd_drv->mutex, portMAX_DELAY);
I2S_CHECK(pdTRUE == ret, "Take semaphore failed", ESP_FAIL);
return ESP_OK;
}
esp_err_t i2s_lcd_release(i2s_lcd_handle_t handle)
{
i2s_lcd_driver_t *i2s_lcd_drv = (i2s_lcd_driver_t *)handle;
I2S_CHECK(NULL != i2s_lcd_drv, "handle pointer invalid", ESP_ERR_INVALID_ARG);
BaseType_t ret = xSemaphoreGive(i2s_lcd_drv->mutex);
I2S_CHECK(pdTRUE == ret, "Give semaphore failed", ESP_FAIL);
return ESP_OK;
}
#endif // CONFIG_IDF_TARGET_ESP32

469
components/bus/i2s_lcd_esp32s2_driver.c

@ -0,0 +1,469 @@
// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "sdkconfig.h"
#if CONFIG_IDF_TARGET_ESP32S2
#include <stdio.h>
#include <string.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "esp_log.h"
#include "driver/gpio.h"
#include "driver/i2s.h"
#include "esp_heap_caps.h"
#include "esp32s2/rom/lldesc.h"
#include "soc/system_reg.h"
#include "i2s_lcd_driver.h"
static const char *TAG = "ESP32S2_I2S_LCD";
#define I2S_CHECK(a, str, ret) if (!(a)) { \
ESP_LOGE(TAG,"%s:%d (%s):%s", __FILE__, __LINE__, __FUNCTION__, str); \
return (ret); \
}
#define LCD_CAM_DMA_NODE_BUFFER_MAX_SIZE (4000) // 4-byte aligned
#define LCD_DATA_MAX_WIDTH (24) /*!< Maximum width of LCD data bus */
typedef struct {
uint32_t dma_buffer_size;
uint32_t dma_half_buffer_size;
uint32_t dma_node_buffer_size;
uint32_t dma_node_cnt;
uint32_t dma_half_node_cnt;
lldesc_t *dma;
uint8_t *dma_buffer;
QueueHandle_t event_queue;
uint8_t width;
bool swap_data;
intr_handle_t lcd_cam_intr_handle;
i2s_dev_t *i2s_dev;
} i2s_lcd_obj_t;
typedef struct {
int rs_io_num;
i2s_lcd_obj_t *i2s_lcd_obj;
SemaphoreHandle_t mutex;
} i2s_lcd_driver_t;
static void IRAM_ATTR i2s_isr(void *arg)
{
BaseType_t HPTaskAwoken = pdFALSE;
i2s_lcd_obj_t *i2s_lcd_obj = (i2s_lcd_obj_t*)arg;
i2s_dev_t *i2s_dev = i2s_lcd_obj->i2s_dev;
typeof(i2s_dev->int_st) status = i2s_dev->int_st;
i2s_dev->int_clr.val = status.val;
if (status.val == 0) {
return;
}
if (status.out_eof) {
xQueueSendFromISR(i2s_lcd_obj->event_queue, (void*)&status.val, &HPTaskAwoken);
}
if (HPTaskAwoken == pdTRUE) {
portYIELD_FROM_ISR();
}
}
static void lcd_dma_set_int(i2s_lcd_obj_t *i2s_lcd_obj)
{
// Generate a data DMA linked list
for (int x = 0; x < i2s_lcd_obj->dma_node_cnt; x++) {
i2s_lcd_obj->dma[x].size = i2s_lcd_obj->dma_node_buffer_size;
i2s_lcd_obj->dma[x].length = i2s_lcd_obj->dma_node_buffer_size;
i2s_lcd_obj->dma[x].buf = (i2s_lcd_obj->dma_buffer + i2s_lcd_obj->dma_node_buffer_size * x);
i2s_lcd_obj->dma[x].eof = !((x + 1) % i2s_lcd_obj->dma_half_node_cnt);
i2s_lcd_obj->dma[x].empty = (uint32_t)&i2s_lcd_obj->dma[(x + 1) % i2s_lcd_obj->dma_node_cnt];
}
i2s_lcd_obj->dma[i2s_lcd_obj->dma_half_node_cnt - 1].empty = (uint32_t)NULL;
i2s_lcd_obj->dma[i2s_lcd_obj->dma_node_cnt - 1].empty = (uint32_t)NULL;
}
static void lcd_dma_set_left(i2s_lcd_obj_t *i2s_lcd_obj, int pos, size_t len)
{
int end_pos = 0, size = 0;
// Processing data length is an integer multiple of i2s_lcd_obj->dma_node_buffer_size
if (len % i2s_lcd_obj->dma_node_buffer_size) {
end_pos = (pos % 2) * i2s_lcd_obj->dma_half_node_cnt + len / i2s_lcd_obj->dma_node_buffer_size;
size = len % i2s_lcd_obj->dma_node_buffer_size;
} else {
end_pos = (pos % 2) * i2s_lcd_obj->dma_half_node_cnt + len / i2s_lcd_obj->dma_node_buffer_size - 1;
size = i2s_lcd_obj->dma_node_buffer_size;
}
// Process the tail node to make it a DMA tail
i2s_lcd_obj->dma[end_pos].size = size;
i2s_lcd_obj->dma[end_pos].length = size;
i2s_lcd_obj->dma[end_pos].eof = 1;
i2s_lcd_obj->dma[end_pos].empty = (uint32_t)NULL;
}
static void lcd_i2s_start(i2s_dev_t *i2s_dev, uint32_t addr, size_t len)
{
while (!i2s_dev->state.tx_idle);
i2s_dev->conf.tx_start = 0;
i2s_dev->conf.tx_reset = 1;
i2s_dev->conf.tx_reset = 0;
i2s_dev->conf.tx_fifo_reset = 1;
i2s_dev->conf.tx_fifo_reset = 0;
i2s_dev->out_link.addr = addr;
i2s_dev->out_link.start = 1;
ets_delay_us(1);
i2s_dev->conf.tx_start = 1;
}
static void i2s_write_data(i2s_lcd_obj_t *i2s_lcd_obj, uint8_t *data, size_t len)
{
int event = 0;
int x = 0, y = 0, left = 0, cnt = 0;
if (len <= 0) {
ESP_LOGE(TAG, "wrong len!");
return;
}
lcd_dma_set_int(i2s_lcd_obj);
uint32_t half_buffer_size = i2s_lcd_obj->dma_half_buffer_size;
cnt = len / half_buffer_size;
// Start signal
xQueueSend(i2s_lcd_obj->event_queue, &event, 0);
// Process a complete piece of data, ping-pong operation
for (x = 0; x < cnt; x++) {
uint8_t *out = (uint8_t*)i2s_lcd_obj->dma[(x % 2) * i2s_lcd_obj->dma_half_node_cnt].buf;
uint8_t *in = data;
if (i2s_lcd_obj->swap_data) {
uint8_t *out1 = out + 1;
uint8_t *in1 = in + 1;
for (y = 0; y < half_buffer_size;) {
out1[y] = in[y];
out[y] = in1[y];
y += 2;
out1[y] = in[y];
out[y] = in1[y];
y += 2;
}
} else {
memcpy(out, in, half_buffer_size);
}
data += half_buffer_size;
xQueueReceive(i2s_lcd_obj->event_queue, (void *)&event, portMAX_DELAY);
lcd_i2s_start(i2s_lcd_obj->i2s_dev, ((uint32_t)&i2s_lcd_obj->dma[(x % 2) * i2s_lcd_obj->dma_half_node_cnt]) & 0xfffff, half_buffer_size);
}
left = len % half_buffer_size;
// Process remaining incomplete segment data
if (left) {
uint8_t *out = (uint8_t*)i2s_lcd_obj->dma[(x % 2) * i2s_lcd_obj->dma_half_node_cnt].buf;
uint8_t *in = data;
cnt = left - left % 2;
if (cnt) {
if (i2s_lcd_obj->swap_data) {
for (y = 0; y < cnt; y+=2) {
out[y+1] = in[y+0];
out[y+0] = in[y+1];
}
} else {
memcpy(out, in, cnt);
}
}
if (left % 2) {
out[cnt] = in[cnt];
}
lcd_dma_set_left(i2s_lcd_obj, x, left);
xQueueReceive(i2s_lcd_obj->event_queue, (void *)&event, portMAX_DELAY);
lcd_i2s_start(i2s_lcd_obj->i2s_dev, ((uint32_t)&i2s_lcd_obj->dma[(x % 2) * i2s_lcd_obj->dma_half_node_cnt]) & 0xfffff, left);
}
xQueueReceive(i2s_lcd_obj->event_queue, (void *)&event, portMAX_DELAY);
}
static esp_err_t i2s_lcd_reg_config(i2s_dev_t *i2s_dev, uint16_t data_width, uint32_t clk_freq)
{
// Configure the clock
i2s_dev->clkm_conf.val = 0;
i2s_dev->clkm_conf.clkm_div_num = 2; // 160MHz / 2 = 80MHz
i2s_dev->clkm_conf.clkm_div_b = 0;
i2s_dev->clkm_conf.clkm_div_a = 63;
i2s_dev->clkm_conf.clk_sel = 2;
i2s_dev->clkm_conf.clk_en = 1;
// Configure sampling rate
i2s_dev->sample_rate_conf.tx_bck_div_num = 40000000 / clk_freq; // Fws = Fbck / 2
i2s_dev->sample_rate_conf.tx_bits_mod = data_width;
i2s_dev->timing.val = 0;
i2s_dev->int_ena.val = 0;
i2s_dev->int_clr.val = ~0;
i2s_dev->conf2.val = 0;
i2s_dev->conf2.lcd_en = 1;
// Configuration data format
i2s_dev->conf.val = 0;
i2s_dev->conf.tx_right_first = 1;
i2s_dev->conf.tx_msb_right = 1;
i2s_dev->conf.tx_dma_equal = 1;
i2s_dev->conf1.tx_pcm_bypass = 1;
i2s_dev->conf1.tx_stop_en = 1;
i2s_dev->fifo_conf.val = 0;
i2s_dev->fifo_conf.dscr_en = 1;
i2s_dev->fifo_conf.tx_fifo_mod_force_en = 1;
i2s_dev->fifo_conf.tx_data_num = 32;
i2s_dev->fifo_conf.tx_fifo_mod = 2;
i2s_dev->fifo_conf.tx_24msb_en = 0;
i2s_dev->conf_chan.tx_chan_mod = 0;//remove
i2s_dev->int_ena.out_eof = 1;
return ESP_OK;
}
static esp_err_t lcd_set_pin(const i2s_lcd_config_t *config)
{
PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[config->pin_num_wr], PIN_FUNC_GPIO);
gpio_set_direction(config->pin_num_wr, GPIO_MODE_OUTPUT);
gpio_set_pull_mode(config->pin_num_wr, GPIO_FLOATING);
gpio_matrix_out(config->pin_num_wr, I2S0O_WS_OUT_IDX, true, false);
for (int i = 0; i < config->data_width; i++) {
PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[config->pin_data_num[i]], PIN_FUNC_GPIO);
gpio_set_direction(config->pin_data_num[i], GPIO_MODE_OUTPUT);
gpio_set_pull_mode(config->pin_data_num[i], GPIO_FLOATING);
// High bit aligned, OUT23 is always the highest bit
gpio_matrix_out(config->pin_data_num[i], I2S0O_DATA_OUT0_IDX + (LCD_DATA_MAX_WIDTH - config->data_width) + i, false, false);
}
return ESP_OK;
}
static esp_err_t lcd_dma_config(i2s_lcd_obj_t *i2s_lcd_obj, uint32_t max_dma_buffer_size)
{
int cnt = 0;
if (LCD_CAM_DMA_NODE_BUFFER_MAX_SIZE % 2 != 0) {
ESP_LOGE(TAG, "ESP32 only supports 2-byte aligned data length");
return ESP_FAIL;
}
if (max_dma_buffer_size >= LCD_CAM_DMA_NODE_BUFFER_MAX_SIZE * 2) {
i2s_lcd_obj->dma_node_buffer_size = LCD_CAM_DMA_NODE_BUFFER_MAX_SIZE;
for (cnt = 0; cnt < max_dma_buffer_size - 8; cnt++) { // Find a buffer size that can divide dma_size
if ((max_dma_buffer_size - cnt) % (i2s_lcd_obj->dma_node_buffer_size * 2) == 0) {
break;
}
}
i2s_lcd_obj->dma_buffer_size = max_dma_buffer_size - cnt;
} else {
i2s_lcd_obj->dma_node_buffer_size = max_dma_buffer_size / 2;
i2s_lcd_obj->dma_buffer_size = i2s_lcd_obj->dma_node_buffer_size * 2;
}
i2s_lcd_obj->dma_half_buffer_size = i2s_lcd_obj->dma_buffer_size / 2;
i2s_lcd_obj->dma_node_cnt = (i2s_lcd_obj->dma_buffer_size) / i2s_lcd_obj->dma_node_buffer_size; // Number of DMA nodes
i2s_lcd_obj->dma_half_node_cnt = i2s_lcd_obj->dma_node_cnt / 2;
ESP_LOGI(TAG, "lcd_buffer_size: %d, lcd_dma_size: %d, lcd_dma_node_cnt: %d", i2s_lcd_obj->dma_buffer_size, i2s_lcd_obj->dma_node_buffer_size, i2s_lcd_obj->dma_node_cnt);
i2s_lcd_obj->dma = (lldesc_t *)heap_caps_malloc(i2s_lcd_obj->dma_node_cnt * sizeof(lldesc_t), MALLOC_CAP_DMA | MALLOC_CAP_8BIT);
i2s_lcd_obj->dma_buffer = (uint8_t *)heap_caps_malloc(i2s_lcd_obj->dma_buffer_size * sizeof(uint8_t), MALLOC_CAP_DMA | MALLOC_CAP_8BIT);
return ESP_OK;
}
static esp_err_t lcd_cam_deinit(i2s_lcd_driver_t *drv)