spi_bus_config_t bus_cfg = { .mosi_io_num = PIN_NUM_MOSI, .miso_io_num = PIN_NUM_MISO, .sclk_io_num = PIN_NUM_CLK, .quadwp_io_num = -1, .quadhd_io_num = -1, .max_transfer_sz = 4000, }; ret = spi_bus_initialize(host.slot, &bus_cfg, SDSPI_DEFAULT_DMA);...
//Pin assignmentscanbe set in menuconfig, see "SD SPI Example Configuration" menu. // You can also change the pin assignments here by changing the following 4 lines. #define PIN_NUM_MISO CONFIG_EXAMPLE_PIN_MISO #define PIN_NUM_MOSI CONFIG_EXAMPLE_PIN_MOSI #define PIN_NUM_CLK CONFIG_EX...
#define MOUNT_POINT "/sdcard" void sdcard_init() { sdmmc_host_t host = SDSPI_HOST_DEFAULT(); host.slot = SPI2_HOST; spi_bus_config_t bus_cnf = { .mosi_io_num = pin_MOSI, .miso_io_num = pin_MISO, .sclk_io_num = pin_CLK, .quadhd_io_num = -1, .quadwp_io_nu...
// Pin assignments can be set in menuconfig, see "SD SPI Example Configuration" menu. // You can also change the pin assignments here by changing the following 4 lines. #define PIN_NUM_MISO CONFIG_EXAMPLE_PIN_MISO #define PIN_NUM_MOSI CONFIG_EXAMPLE_PIN_MOSI #define PIN_NUM_CLK CONFI...
1、初始化引脚功能。由于 ESP32 的引脚是复用的,所以对于 SPI 的时钟线、数据线要设置。 Configuration.SetPinFunction(PIN_MOSI, DeviceFunction.SPI1_MOSI); Configuration.SetPinFunction(PIN_CLK, DeviceFunction.SPI1_CLOCK); Configuration.SetPinFunction(PIN_MISO, DeviceFunction.SPI1_MISO); ...
#define LCD_HOST HSPI_HOST #define PIN_NUM_MISO 25 #define PIN_NUM_MOSI 23 #define PIN_NUM_CLK 19 #define PIN_NUM_CS 22 #define PIN_NUM_DC 21 #define PIN_NUM_RST 18 #define PIN_NUM_BCKL 5 //To speed up transfers, every SPI transfer sends a bunch of lines. This define...
当 ESP32 进入 Deep-sleep 模式时,所有由 APB_CLK 驱动的外设、CPU 和 RAM 将掉电;RTC_CLK 继续工作;RTC 控制器、RTC 外设、ULP 协处理器、RTC 快速内存和 RTC 慢速内存可以不掉电,具体取决于 App 中的唤醒源设置。 资源包括: RTC 外设 – 包括片上温度传感器、ADC、RTC GPIO 和 touchpad;...
FILE *f = fopen("/spiflash/hello.txt", "wb"); if (f == NULL) { ESP_LOGE(TAG, "Failed to open file for writing"); return; } fprintf(f, "written using ESP-IDF %s\n", esp_get_idf_version()); fclose(f); ESP_LOGI(TAG, "File written"); ...
static void spi_max7129_write_byte(uint8_t data) { uint8_t i = 0; gpio_set_level(PIN_NUM_CS, 0); for (;i < 8;i++) { gpio_set_level(PIN_NUM_CLK, 0); gpio_set_level(PIN_NUM_MOSI, data & 0X80); data = data << 1; ...
GPIO11SPI_MOSI DI SPI数据线,esp32s2输出,flash输入 GPIO13SPI_MISO DO SPI数据线,esp32s2输入,flash输出 GPIO10SPI_CS CS SPI片选 GPIO9 HOLD 保持引脚,可以用GPIO控制也可以直接硬件拉高 当HOLD引脚拉低时,DO将处于高阻抗,DI和CLK针上的信号将被忽略 当HOLD引脚拉高时,设备允许操作 GPIO14 WP 写入保护引...