gd32f103rct6将命令发送至AA01h的代码

以下是使用GD32F103的SPI通信将命令发送至AA01h的示例代码：

#include "gd32f10x_spi.h"
#include "gd32f10x_gpio.h"

#define SPIx                          SPI1
#define SPIx_CLK                      RCU_SPI1
#define SPIx_GPIO                     GPIOA
#define SPIx_GPIO_CLK                 RCU_GPIOA
#define SPIx_PIN_CS                   GPIO_PIN_4
#define SPIx_PIN_SCK                  GPIO_PIN_5
#define SPIx_PIN_MISO                 GPIO_PIN_6
#define SPIx_PIN_MOSI                 GPIO_PIN_7
#define SPIx_CS_GPIO                  GPIOA
#define SPIx_CS_GPIO_CLK              RCU_GPIOA

void SPIx_GPIO_Config(void)
{
    gpio_init(SPIx_GPIO, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, SPIx_PIN_SCK | SPIx_PIN_MOSI);
    gpio_init(SPIx_GPIO, GPIO_MODE_IN_FLOATING, GPIO_OSPEED_50MHZ, SPIx_PIN_MISO);
    gpio_init(SPIx_CS_GPIO, GPIO_MODE_OUT_PP, GPIO_OSPEED_50MHZ, SPIx_PIN_CS);
}

void SPIx_Config(void)
{
    spi_parameter_struct spi_init_struct;
    
    rcu_periph_clock_enable(SPIx_CLK);
    spi_i2s_deinit(SPIx);
    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.clock_polarity_phase = SPI_CK_PL_HIGH_PH_2EDGE;
    spi_init_struct.nss = SPI_NSS_SOFT;
    spi_init_struct.prescale = SPI_PSC_16;
    spi_init_struct.endian = SPI_ENDIAN_MSB;
    spi_init(SPIx, &spi_init_struct);
    spi_enable(SPIx);
}

void SPIx_SendByte(uint8_t byte)
{
    while (RESET == spi_i2s_flag_get(SPIx, SPI_FLAG_TBE));
    spi_i2s_data_transmit(SPIx, byte);
    while (RESET == spi_i2s_flag_get(SPIx, SPI_FLAG_RBNE));
    spi_i2s_data_receive(SPIx);
}

void send_command(uint8_t command)
{
    gpio_bit_reset(SPIx_CS_GPIO, SPIx_PIN_CS);  // 使能片选信号
    SPIx_SendByte(command);  // 发送命令
    gpio_bit_set(SPIx_CS_GPIO, SPIx_PIN_CS);  // 禁用片选信号
}

int main(void)
{
    SPIx_GPIO_Config();
    SPIx_Config();
    
    send_command(0xAA);  // 发送命令
    
    while (1);
}

其中，`SPIx_GPIO_Config()`函数用于配置SPI通信的GPIO引脚，`SPIx_Config()`函数用于配置SPI通信的参数，`SPIx_SendByte()`函数用于发送一个字节的数据，`send_command()`函数则是针对本题的需求，将命令发送至AA01h。在`main()`函数中，调用`send_command(0xAA)`即可发送命令。