spi: update examples to use the new GDMA driver

examples/peripherals/spi_master/hd_eeprom/main/spi_eeprom_main.c

@@ -26,14 +26,12 @@
 #ifdef CONFIG_IDF_TARGET_ESP32
 #  ifdef CONFIG_EXAMPLE_USE_SPI1_PINS
 #    define EEPROM_HOST    SPI1_HOST
-#    define DMA_CHAN    0
 // Use default pins, same as the flash chip.
 #    define PIN_NUM_MISO 7
 #    define PIN_NUM_MOSI 8
 #    define PIN_NUM_CLK  6
 #  else
 #    define EEPROM_HOST    HSPI_HOST
-#    define DMA_CHAN    2
 #    define PIN_NUM_MISO 18
 #    define PIN_NUM_MOSI 23
 #    define PIN_NUM_CLK  19
@@ -42,7 +40,6 @@
 #  define PIN_NUM_CS   13
 #elif defined CONFIG_IDF_TARGET_ESP32S2
 #  define EEPROM_HOST    SPI2_HOST
-#  define DMA_CHAN    EEPROM_HOST
 
 #  define PIN_NUM_MISO 37
 #  define PIN_NUM_MOSI 35
@@ -50,7 +47,6 @@
 #  define PIN_NUM_CS   34
 #elif defined CONFIG_IDF_TARGET_ESP32C3
 #  define EEPROM_HOST    SPI2_HOST
-#  define DMA_CHAN    EEPROM_HOST
 
 #  define PIN_NUM_MISO 2
 #  define PIN_NUM_MOSI 7
@@ -58,6 +54,7 @@
 #  define PIN_NUM_CS   10
 #endif
 
+
 static const char TAG[] = "main";
 
 void app_main(void)
@@ -74,7 +71,7 @@ void app_main(void)
         .max_transfer_sz = 32,
     };
     //Initialize the SPI bus
-    ret = spi_bus_initialize(EEPROM_HOST, &buscfg, DMA_CHAN);
+    ret = spi_bus_initialize(EEPROM_HOST, &buscfg, SPI_DMA_CH_AUTO);
     ESP_ERROR_CHECK(ret);
 #else
     ESP_LOGI(TAG, "Attach to main flash bus...");

examples/peripherals/spi_master/lcd/main/spi_master_example_main.c

@@ -30,7 +30,6 @@
 
 #ifdef CONFIG_IDF_TARGET_ESP32
 #define LCD_HOST    HSPI_HOST
-#define DMA_CHAN    2
 
 #define PIN_NUM_MISO 25
 #define PIN_NUM_MOSI 23
@@ -42,7 +41,6 @@
 #define PIN_NUM_BCKL 5
 #elif defined CONFIG_IDF_TARGET_ESP32S2
 #define LCD_HOST    SPI2_HOST
-#define DMA_CHAN    LCD_HOST
 
 #define PIN_NUM_MISO 37
 #define PIN_NUM_MOSI 35
@@ -54,7 +52,6 @@
 #define PIN_NUM_BCKL 6
 #elif defined CONFIG_IDF_TARGET_ESP32C3
 #define LCD_HOST    SPI2_HOST
-#define DMA_CHAN    LCD_HOST
 
 #define PIN_NUM_MISO 2
 #define PIN_NUM_MOSI 7
@@ -62,8 +59,8 @@
 #define PIN_NUM_CS   10
 
 #define PIN_NUM_DC   9
-#define PIN_NUM_RST  18
-#define PIN_NUM_BCKL 19
+#define PIN_NUM_RST  4
+#define PIN_NUM_BCKL 5
 #endif
 
 //To speed up transfers, every SPI transfer sends a bunch of lines. This define specifies how many. More means more memory use,
@@ -439,7 +436,7 @@ void app_main(void)
         .pre_cb=lcd_spi_pre_transfer_callback,  //Specify pre-transfer callback to handle D/C line
     };
     //Initialize the SPI bus
-    ret=spi_bus_initialize(LCD_HOST, &buscfg, DMA_CHAN);
+    ret=spi_bus_initialize(LCD_HOST, &buscfg, SPI_DMA_CH_AUTO);
     ESP_ERROR_CHECK(ret);
     //Attach the LCD to the SPI bus
     ret=spi_bus_add_device(LCD_HOST, &devcfg, &spi);

examples/peripherals/spi_slave/receiver/main/app_main.c

@@ -68,15 +68,12 @@ Pins in use. The SPI Master can use the GPIO mux, so feel free to change these i
 
 #ifdef CONFIG_IDF_TARGET_ESP32
 #define RCV_HOST    HSPI_HOST
-#define DMA_CHAN    2
 
 #elif defined CONFIG_IDF_TARGET_ESP32S2
 #define RCV_HOST    SPI2_HOST
-#define DMA_CHAN    RCV_HOST
 
 #elif defined CONFIG_IDF_TARGET_ESP32C3
 #define RCV_HOST    SPI2_HOST
-#define DMA_CHAN    RCV_HOST
 
 #endif
 
@@ -132,7 +129,7 @@ void app_main(void)
     gpio_set_pull_mode(GPIO_CS, GPIO_PULLUP_ONLY);
 
     //Initialize SPI slave interface
-    ret=spi_slave_initialize(RCV_HOST, &buscfg, &slvcfg, DMA_CHAN);
+    ret=spi_slave_initialize(RCV_HOST, &buscfg, &slvcfg, SPI_DMA_CH_AUTO);
     assert(ret==ESP_OK);
 
     WORD_ALIGNED_ATTR char sendbuf[129]="";

examples/peripherals/spi_slave/sender/main/app_main.c

@@ -69,15 +69,12 @@ Pins in use. The SPI Master can use the GPIO mux, so feel free to change these i
 
 #ifdef CONFIG_IDF_TARGET_ESP32
 #define SENDER_HOST HSPI_HOST
-#define DMA_CHAN    2
 
 #elif defined CONFIG_IDF_TARGET_ESP32S2
 #define SENDER_HOST SPI2_HOST
-#define DMA_CHAN    SENDER_HOST
 
 #elif defined CONFIG_IDF_TARGET_ESP32C3
-#define SENDER_HOST    SPI2_HOST
-#define DMA_CHAN    SENDER_HOST
+#define SENDER_HOST SPI2_HOST
 
 #endif
 
@@ -156,7 +153,7 @@ void app_main(void)
     gpio_isr_handler_add(GPIO_HANDSHAKE, gpio_handshake_isr_handler, NULL);
 
     //Initialize the SPI bus and add the device we want to send stuff to.
-    ret=spi_bus_initialize(SENDER_HOST, &buscfg, DMA_CHAN);
+    ret=spi_bus_initialize(SENDER_HOST, &buscfg, SPI_DMA_CH_AUTO);
     assert(ret==ESP_OK);
     ret=spi_bus_add_device(SENDER_HOST, &devcfg, &handle);
     assert(ret==ESP_OK);