Added lcd off and lcd power down functions to the API. This improves sleep current which is around 4.5mA instead of 12mA

src/W800 SDK v1.00.08/app/app_drivers/lcd/lcd.c

@@ -382,11 +382,39 @@ void lcd_set_backlight(LCDConfig_t * const LCDConfig, uint8_t brightness)
 
 void lcd_hardware_reset(LCDConfig_t * const LCDConfig)
 {
+    if(!LCDConfig) return;
+
     tls_gpio_write(LCDConfig->LCDResetPin, 0);
     tls_os_time_delay(1);
     tls_gpio_write(LCDConfig->LCDResetPin, 1);
 }
 
+void lcd_on(LCDConfig_t *const LCDConfig, bool state)
+{
+    if(!LCDConfig) return;
+
+    lcd_set_data_command(LCDConfig, LCD_COMMAND);
+    lcd_set_cs(LCDConfig, LCD_SELECTED);
+
+    mmc_sdio_driver_write_one(state ? 0x29 : 0x28);
+
+    lcd_set_cs(LCDConfig, LCD_RELEASED);
+    lcd_set_data_command(LCDConfig, LCD_DATA);
+}
+
+void lcd_sleep(LCDConfig_t *const LCDConfig, bool state)
+{
+    if(!LCDConfig) return;
+
+    lcd_set_data_command(LCDConfig, LCD_COMMAND);
+    lcd_set_cs(LCDConfig, LCD_SELECTED);
+
+    mmc_sdio_driver_write_one(state ? 0x10 : 0x11);
+
+    lcd_set_cs(LCDConfig, LCD_RELEASED);
+    lcd_set_data_command(LCDConfig, LCD_DATA);
+}
+
 static void lcd_write_cmd_data_bytes(LCDConfig_t * const LCDConfig, const uint8_t *cmdAndData, uint32_t dataLengthInBytes)
 {
     // Select the slave CS line and tell him that he will receive a command !

src/W800 SDK v1.00.08/app/app_drivers/lcd/lcd.h

@@ -104,4 +104,21 @@ void lcd_set_backlight(LCDConfig_t * const LCDConfig, uint8_t brightness);
  */
 void lcd_hardware_reset(LCDConfig_t * const LCDConfig);
 
+/**
+ * @brief Turns the LCD on or off, /!\ not the same as sleep mode !
+ * 
+ * @param LCDConfig a pointer a user allocated LCDConfig_t structure
+ * @param state true to turn the LCD on or false to turn it off
+ */
+void lcd_on(LCDConfig_t * const LCDConfig, bool state);
+
+/**
+ * @brief Puts the LCD in power down mode (sleep) or power up mode (active)
+ * Sleep mode puts the LCD in it's lowest power state
+ * 
+ * @param LCDConfig a pointer a user allocated LCDConfig_t structure
+ * @param state true to put the LCD in sleep mode or false to put it in active mode
+ */
+void lcd_sleep(LCDConfig_t * const LCDConfig, bool state);
+
 #endif //LCD_H

src/W800 SDK v1.00.08/app/app_drivers/mmc_sdio/mmc_sdio.c

@@ -98,6 +98,9 @@ void mmc_sdio_driver_write_dma_async(uint32_t *data, uint32_t dataLengthInBytes)
 
 void mmc_sdio_driver_write_one(uint8_t data)
 {
+    /* Wait for MMC device to be ready to send the data */
+    while (SDIO_HOST->MMC_IO & 0x01);
+    
     SDIO_HOST->BUF_CTL = 0x4820;
     SDIO_HOST->DATA_BUF[0] = (uint32_t)data;
     SDIO_HOST->MMC_BYTECNTL = 1U;
@@ -109,6 +112,9 @@ void mmc_sdio_driver_write_one(uint8_t data)
 
 void mmc_sdio_driver_write(const uint8_t *data, uint16_t dataLengthInBytes)
 {
+    /* Wait for MMC device to be ready to send the data */
+    while (SDIO_HOST->MMC_IO & 0x01);
+
     SDIO_HOST->BUF_CTL = 0x4820;
     memcpy((void *)SDIO_HOST->DATA_BUF, (void *)data, dataLengthInBytes);
     SDIO_HOST->MMC_BYTECNTL = dataLengthInBytes;

src/W800 SDK v1.00.08/app/gfx/gfx_task.c

@@ -237,6 +237,8 @@ void gfx_task(void *param)
     don't forget to turn the backlight on ! */
     setBrightness(persistency_get_settings()->display.brightness);
 
+    extern LCDConfig_t LCDConfig;
+
     for(;;)
     {
         lv_timer_handler();
@@ -275,12 +277,18 @@ void gfx_task(void *param)
         {
             // First, we disable the display backlight and we set all the peripherals in their low power mode
             setBrightness(0);
+            //lcd_on(&LCDConfig, false);
+            lcd_sleep(&LCDConfig, true);
+            QMC5883L_set_power_mode(Standby);
             // Let's sleep
             tls_pmu_sleep_start();
             // On wake up, we force the watch face to sync up with the rtc /!\ RTC update delay WTF ?
             tls_os_time_delay(1);
             watch_face_force_sync(&watchFace);
             lv_disp_trig_activity(NULL);
+            QMC5883L_set_power_mode(Continuous);
+            //lcd_on(&LCDConfig, true);
+            lcd_sleep(&LCDConfig, false);
             setBrightness(persistency_get_settings()->display.brightness);
         }
     }