用SPI 写个例程 基于GD32F103ZET6

好的，基于GD32F103ZET6的SPI读取TLE5012B温度寄存器的例程如下：

#include "gd32f10x.h"

#define TLE5012B_CS_PIN     GPIO_PIN_4
#define TLE5012B_CS_PORT    GPIOB
#define SPI_DEV             SPI1

void SPI_Configuration(void)
{
    spi_parameter_struct spi_init_struct;

    /* enable SPI1 clock */
    rcu_periph_clock_enable(RCU_SPI1);

    /* SPI1 configurate */
    spi_i2s_deinit(SPI_DEV);
    spi_init_struct.device_mode = SPI_MASTER;
    spi_init_struct.trans_mode = SPI_TRANSMODE_FULLDUPLEX;
    spi_init_struct.frame_size = SPI_FRAMESIZE_8BIT;
    spi_init_struct.nss = SPI_NSS_SOFT;
    spi_init_struct.master_nss = SPI_MASTER_KEEPNSS;
    spi_init_struct.prescale = SPI_PSC_16;
    spi_init_struct.endian = SPI_ENDIAN_MSB;
    spi_init(SPI_DEV, &spi_init_struct);

    /* enable SPI1 */
    spi_enable(SPI_DEV);
}

void GPIO_Configuration(void)
{
    /* enable GPIOB clock */
    rcu_periph_clock_enable(RCU_GPIOB);

    /* configure GPIOB.4 as output push-pull */
    gpio_init(TLE5012B_CS_PORT, GPIO_MODE_OUT_PP, GPIO_OSPEED_50MHZ, TLE5012B_CS_PIN);
}

void TLE5012B_Read_Temperature(void)
{
    uint8_t tx_buf[2], rx_buf[2];
    uint16_t temperature;

    /* configure TLE5012B chip select pin as low */
    gpio_bit_reset(TLE5012B_CS_PORT, TLE5012B_CS_PIN);

    /* send read temperature command to TLE5012B */
    tx_buf[0] = 0x05 | 0x80;
    tx_buf[1] = 0x00;
    spi_i2s_data_transmit(SPI_DEV, tx_buf[0]);
    while(spi_i2s_flag_get(SPI_DEV, SPI_FLAG_TBE) == RESET);
    spi_i2s_data_transmit(SPI_DEV, tx_buf[1]);
    while(spi_i2s_flag_get(SPI_DEV, SPI_FLAG_TBE) == RESET);

    /* read temperature value from TLE5012B */
    spi_i2s_data_transmit(SPI_DEV, 0x00);
    while(spi_i2s_flag_get(SPI_DEV, SPI_FLAG_TBE) == RESET);
    spi_i2s_data_transmit(SPI_DEV, 0x00);
    while(spi_i2s_flag_get(SPI_DEV, SPI_FLAG_TBE) == RESET);
    while(spi_i2s_flag_get(SPI_DEV, SPI_FLAG_RBNE) == RESET);
    rx_buf[0] = spi_i2s_data_receive(SPI_DEV);
    while(spi_i2s_flag_get(SPI_DEV, SPI_FLAG_RBNE) == RESET);
    rx_buf[1] = spi_i2s_data_receive(SPI_DEV);

    /* configure TLE5012B chip select pin as high */
    gpio_bit_set(TLE5012B_CS_PORT, TLE5012B_CS_PIN);

    /* calculate temperature value */
    temperature = (rx_buf[0] << 8) | rx_buf[1];
    temperature = temperature & 0x0FFF;
    temperature = ((temperature * 165) / 4096) - 40;

    /* print temperature value */
    printf("TLE5012B temperature: %d\n", temperature);
}

int main(void)
{
    /* configure SPI and GPIO */
    SPI_Configuration();
    GPIO_Configuration();

    /* read temperature value from TLE5012B */
    TLE5012B_Read_Temperature();

    while(1);
}

在这个例程中，我们首先通过调用`SPI_Configuration()`函数配置了SPI接口，然后通过调用`GPIO_Configuration()`函数配置了TLE5012B的片选引脚。接着，我们调用`TLE5012B_Read_Temperature()`函数从TLE5012B中读取温度值。在这个函数中，我们先向TLE5012B发送了读取温度寄存器的命令，然后从TLE5012B中读取了温度值并计算出了真实的温度值。最后，我们通过调用`printf()`函数将温度值打印到终端上。

需要注意的是，这个例程中的SPI操作是基于GD32F103ZET6的标准库实现的，如果您使用的是其他的MCU或者不同的开发环境，可能需要进行一些修改。同时，为了使得这个例程能够正常工作，您还需要将`printf()`函数和串口相关的配置添加到代码中。