Merge pull request #341 from jepler/esp32-camera-backlight-etc

adafruit-camera-esp32s3: make LCD work
adafruit · Jul 26, 2023 · eaa0c13 · eaa0c13
2 parents 55aff8d + c4c3a48
commit eaa0c13
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Showing 2 changed files with 56 additions and 4 deletions.
diff --git a/ports/espressif/boards/adafruit_camera_esp32s3/board.h b/ports/espressif/boards/adafruit_camera_esp32s3/board.h
@@ -51,6 +51,24 @@
 // Number of neopixels
 #define NEOPIXEL_NUMBER       1
 
+//Peripheral power is enabled through I2C connected AW9523
+#define I2C_MASTER_SCL_IO           34
+#define I2C_MASTER_SDA_IO           33
+#define I2C_MASTER_NUM              0
+#define I2C_MASTER_FREQ_HZ          400000
+#define I2C_MASTER_TX_BUF_DISABLE   0
+#define I2C_MASTER_RX_BUF_DISABLE   0
+#define I2C_MASTER_TIMEOUT_MS       1000
+#define I2C_WAIT                    40      //Timing (in microseconds) for I2C
+
+
+#define AW9523_ADDR (0x5B)
+#define AW9523_REG_SOFTRESET (0x7f)
+#define AW9523_REG_OUTPUT0 (0x02)
+#define AW9523_REG_CONFIG0 (0x04)
+#define AW9523_DEFAULT_OUTPUT (0)
+#define AW9523_DEFAULT_CONFIG (0x2)
+
 //--------------------------------------------------------------------+
 // TFT
 //--------------------------------------------------------------------+
@@ -76,7 +94,7 @@
 
 // Memory Data Access Control & // Vertical Scroll Start Address
 #define DISPLAY_MADCTL        (TFT_MADCTL_MX | TFT_MADCTL_MY | TFT_MADCTL_MV)
-#define DISPLAY_VSCSAD        140
+#define DISPLAY_VSCSAD        80
 
 #define DISPLAY_TITLE         "AdaCamera"
 

diff --git a/ports/espressif/boards/boards.c b/ports/espressif/boards/boards.c
@@ -60,7 +60,7 @@ void dotstar_init(void);
 void dotstar_write(uint8_t const rgb[]);
 #endif
 
-#ifdef TCA9554_ADDR
+#if defined(TCA9554_ADDR) || defined(AW9523_ADDR)
 #include "esp_err.h"
 #include "driver/i2c.h"
 #endif
@@ -140,7 +140,7 @@ void app_main(void)
 void board_init(void)
 {
 // Peripheral control through I2C Expander
-#ifdef TCA9554_ADDR
+#if defined(TCA9554_ADDR) || defined(AW9523_ADDR)
   int i2c_num = I2C_MASTER_NUM;
   i2c_config_t conf = {
       .mode = I2C_MODE_MASTER,
@@ -153,6 +153,7 @@ void board_init(void)
   i2c_param_config(i2c_num, &conf);
   i2c_driver_install(i2c_num, conf.mode, I2C_MASTER_RX_BUF_DISABLE, I2C_MASTER_TX_BUF_DISABLE, 0);
 
+#if defined(TCA9554_ADDR)
   // Turn on PERI_POWER that is controlled by TC9554 I2C Expander
   i2c_cmd_handle_t cmd = i2c_cmd_link_create();
   i2c_master_start(cmd);
@@ -171,10 +172,43 @@ void board_init(void)
   i2c_master_stop(cmd);
   i2c_master_cmd_begin(i2c_num, cmd, 1000 / portTICK_RATE_MS);
   i2c_cmd_link_delete(cmd);
-  i2c_driver_delete(i2c_num);
 
 #endif
 
+#if defined(AW9523_ADDR)
+  i2c_cmd_handle_t cmd = i2c_cmd_link_create();
+  i2c_master_start(cmd);
+  i2c_master_write_byte(cmd, AW9523_ADDR << 1 | I2C_MASTER_WRITE, true);
+  i2c_master_write_byte(cmd, AW9523_REG_SOFTRESET, true);
+  i2c_master_write_byte(cmd, 0, true);
+  i2c_master_stop(cmd);
+  i2c_master_cmd_begin(i2c_num, cmd, 1000 / portTICK_RATE_MS);
+  i2c_cmd_link_delete(cmd);
+
+  cmd = i2c_cmd_link_create();
+  i2c_master_start(cmd);
+  i2c_master_write_byte(cmd, AW9523_ADDR << 1 | I2C_MASTER_WRITE, true);
+  i2c_master_write_byte(cmd, AW9523_REG_CONFIG0, true);
+  i2c_master_write_byte(cmd, AW9523_DEFAULT_CONFIG >> 8, true);
+  i2c_master_write_byte(cmd, AW9523_DEFAULT_CONFIG & 0xff, true);
+  i2c_master_stop(cmd);
+  i2c_master_cmd_begin(i2c_num, cmd, 1000 / portTICK_RATE_MS);
+  i2c_cmd_link_delete(cmd);
+
+  cmd = i2c_cmd_link_create();
+  i2c_master_start(cmd);
+  i2c_master_write_byte(cmd, AW9523_ADDR << 1 | I2C_MASTER_WRITE, true);
+  i2c_master_write_byte(cmd, AW9523_REG_OUTPUT0, true);
+  i2c_master_write_byte(cmd, AW9523_DEFAULT_OUTPUT >> 8, true);
+  i2c_master_write_byte(cmd, AW9523_DEFAULT_OUTPUT & 0xff, true);
+  i2c_master_stop(cmd);
+  i2c_master_cmd_begin(i2c_num, cmd, 1000 / portTICK_RATE_MS);
+  i2c_cmd_link_delete(cmd);
+#endif
+
+  i2c_driver_delete(i2c_num);
+#endif
+
 #ifdef LED_PIN
   ledc_timer_config_t ledc_timer =
   {