esp32c3,esp-idf 4.4.4,用spi2_host与ch623刷卡芯片用spi通信不用dma，给个例程

好的，以下是一个使用ESP32-C3的SPI2 Host与CH623刷卡芯片进行SPI通信的示例代码，不使用DMA：

#include "esp_system.h"
#include "esp_log.h"
#include "driver/spi_common.h"
#include "driver/spi_master.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"

// SPI2 Host的引脚定义
#define PIN_NUM_MISO 21  // Master In Slave Out
#define PIN_NUM_MOSI 18  // Master Out Slave In
#define PIN_NUM_CLK  19  // SPI Clock
#define PIN_NUM_CS   5   // Chip Select

// CH623的命令定义
#define CMD_READ_STATUS   0xD7
#define CMD_READ_DATA     0xB1
#define CMD_WRITE_DATA    0xB0

static const char *TAG = "spi_example";

spi_device_handle_t spi;

static void spi_init()
{
    esp_err_t ret;

    // 配置SPI总线
    spi_bus_config_t buscfg = {
        .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 = 1024 * 32,
    };
    ret = spi_bus_initialize(SPI2_HOST, &buscfg, 1);
    assert(ret == ESP_OK);

    // 配置SPI设备
    spi_device_interface_config_t devcfg = {
        .command_bits = 8,
        .address_bits = 0,
        .dummy_bits = 0,
        .mode = 0,
        .duty_cycle_pos = 128,
        .cs_ena_pretrans = 0,
        .cs_ena_posttrans = 0,
        .clock_speed_hz = 1000000,
        .input_delay_ns = 0,
        .spics_io_num = PIN_NUM_CS,
        .flags = 0,
        .queue_size = 1,
        .pre_cb = NULL,
        .post_cb = NULL,
    };
    ret = spi_bus_add_device(SPI2_HOST, &devcfg, &spi);
    assert(ret == ESP_OK);
}

static void spi_deinit()
{
    esp_err_t ret;
    ret = spi_bus_remove_device(spi);
    assert(ret == ESP_OK);
    ret = spi_bus_free(SPI2_HOST);
    assert(ret == ESP_OK);
}

static void spi_send_cmd(uint8_t cmd)
{
    esp_err_t ret;
    spi_transaction_t t = {
        .flags = SPI_TRANS_USE_TXDATA,
        .tx_data = { cmd },
        .length = 8,
    };
    ret = spi_device_transmit(spi, &t);
    assert(ret == ESP_OK);
}

static void spi_read_data(uint8_t *buf, size_t len)
{
    esp_err_t ret;
    spi_transaction_t t = {
        .flags = SPI_TRANS_USE_RXDATA,
        .rxlength = len * 8,
        .length = len * 8,
    };
    ret = spi_device_transmit(spi, &t);
    assert(ret == ESP_OK);
    memcpy(buf, t.rx_data, len);
}

static void spi_write_data(const uint8_t *buf, size_t len)
{
    esp_err_t ret;
    spi_transaction_t t = {
        .tx_buffer = buf,
        .length = len * 8,
    };
    ret = spi_device_transmit(spi, &t);
    assert(ret == ESP_OK);
}

void app_main()
{
    esp_err_t ret;
    uint8_t buf[16];

    // 初始化SPI总线和设备
    spi_init();

    // 发送读取状态命令
    spi_send_cmd(CMD_READ_STATUS);

    // 读取状态数据
    spi_read_data(buf, 1);
    ESP_LOGI(TAG, "status: 0x%02x", buf[0]);

    // 发送读取数据命令
    spi_send_cmd(CMD_READ_DATA);

    // 读取数据
    spi_read_data(buf, 16);
    ESP_LOGI(TAG, "data:");
    for (int i = 0; i < 16; i++) {
        ESP_LOGI(TAG, "  0x%02x", buf[i]);
    }

    // 发送写入数据命令
    spi_send_cmd(CMD_WRITE_DATA);

    // 写入数据
    for (int i = 0; i < 16; i++) {
        buf[i] = i;
    }
    spi_write_data(buf, 16);

    // 关闭SPI总线和设备
    spi_deinit();
}

这个示例代码使用了SPI2 Host，配置了MISO、MOSI、CLK和CS引脚。spi_init函数初始化了SPI总线和设备，spi_send_cmd函数用于发送命令，spi_read_data函数用于读取数据，spi_write_data函数用于写入数据。在应用程序的app_main函数中，先发送读取状态命令，然后读取状态数据，再发送读取数据命令，读取数据，最后发送写入数据命令，写入数据。在使用完毕后，调用spi_deinit函数关闭SPI总线和设备。