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spi_example: fix the example to pass in esp32s2beta

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This commit is contained in:
Michael (XIAO Xufeng)
2019-06-13 14:21:35 +08:00
parent 17378fd4c2
commit fcf4502c6b
5 changed files with 74 additions and 13 deletions
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21
examples/peripherals/spi_master/main/spi_master_example_main.c
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@@ -28,6 +28,10 @@
before the transaction is sent, the callback will set this line to the correct state.
*/
#ifdef CONFIG_IDF_TARGET_ESP32
#define LCD_HOST HSPI_HOST
#define DMA_CHAN 2
#define PIN_NUM_MISO 25
#define PIN_NUM_MOSI 23
#define PIN_NUM_CLK 19
@@ -36,6 +40,19 @@
#define PIN_NUM_DC 21
#define PIN_NUM_RST 18
#define PIN_NUM_BCKL 5
#elif defined CONFIG_IDF_TARGET_ESP32S2BETA
#define LCD_HOST SPI2_HOST
#define DMA_CHAN LCD_HOST
#define PIN_NUM_MISO 37
#define PIN_NUM_MOSI 35
#define PIN_NUM_CLK 36
#define PIN_NUM_CS 34
#define PIN_NUM_DC 4
#define PIN_NUM_RST 5
#define PIN_NUM_BCKL 6
#endif
//To speed up transfers, every SPI transfer sends a bunch of lines. This define specifies how many. More means more memory use,
//but less overhead for setting up / finishing transfers. Make sure 240 is dividable by this.
@@ -410,10 +427,10 @@ void app_main()
.pre_cb=lcd_spi_pre_transfer_callback, //Specify pre-transfer callback to handle D/C line
};
//Initialize the SPI bus
ret=spi_bus_initialize(HSPI_HOST, &buscfg, 1);
ret=spi_bus_initialize(LCD_HOST, &buscfg, DMA_CHAN);
ESP_ERROR_CHECK(ret);
//Attach the LCD to the SPI bus
ret=spi_bus_add_device(HSPI_HOST, &devcfg, &spi);
ret=spi_bus_add_device(LCD_HOST, &devcfg, &spi);
ESP_ERROR_CHECK(ret);
//Initialize the LCD
lcd_init(spi);