基于MM32F0010A1T为主控,初始化无线VG4131S433N0S1模块,进行发送和接收通信,其中GPIOA的6、7、8、9、10、15引脚分别控制模块的CE、IQR、以及SPI1的CLK、MOSI、MISO、NSS引脚,不使用VG4131S433N0S1库函数
时间: 2023-10-20 21:18:11 浏览: 42
好的,这个问题需要进行以下步骤:
1. 初始化SPI1
```c
void SPI1_Init(void)
{
RCC->APB2ENR |= RCC_APB2ENR_SPI1EN; //使能SPI1时钟
RCC->AHBENR |= RCC_AHBENR_GPIOAEN; //使能GPIOA时钟
//配置PA5、PA6、PA7为SPI1的SCK、MISO、MOSI引脚
GPIOA->MODER |= GPIO_MODER_MODER5_1 | GPIO_MODER_MODER6_1 | GPIO_MODER_MODER7_1;
GPIOA->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR5 | GPIO_OSPEEDER_OSPEEDR6 | GPIO_OSPEEDER_OSPEEDR7;
GPIOA->AFR[0] |= 0x555 << GPIO_AFRL_AFRL5_Pos | 0x555 << GPIO_AFRL_AFRL6_Pos | 0x555 << GPIO_AFRL_AFRL7_Pos;
//配置PA4为NSS引脚
GPIOA->MODER |= GPIO_MODER_MODER4_0;
GPIOA->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR4;
GPIOA->BSRR |= GPIO_BSRR_BS_4;
SPI1->CR1 |= SPI_CR1_MSTR | SPI_CR1_BR_0 | SPI_CR1_CPOL | SPI_CR1_CPHA; //设置为主机,时钟分频为4,时钟空闲状态为高电平,数据采样时钟为第二个边沿
SPI1->CR2 |= SPI_CR2_DS_0 | SPI_CR2_DS_1 | SPI_CR2_DS_2; //数据位长度为8位
SPI1->CR1 |= SPI_CR1_SPE; //使能SPI1
}
```
2. 初始化GPIOA的引脚
```c
void GPIOA_Init(void)
{
RCC->AHBENR |= RCC_AHBENR_GPIOAEN; //使能GPIOA时钟
//配置PA6、PA7、PA8、PA9、PA10、PA15为输出模式
GPIOA->MODER |= GPIO_MODER_MODER6_0 | GPIO_MODER_MODER7_0 | GPIO_MODER_MODER8_0 | GPIO_MODER_MODER9_0 | GPIO_MODER_MODER10_0 | GPIO_MODER_MODER15_0;
GPIOA->OTYPER &= ~(GPIO_OTYPER_OT_6 | GPIO_OTYPER_OT_7 | GPIO_OTYPER_OT_8 | GPIO_OTYPER_OT_9 | GPIO_OTYPER_OT_10 | GPIO_OTYPER_OT_15);
GPIOA->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR6 | GPIO_OSPEEDER_OSPEEDR7 | GPIO_OSPEEDER_OSPEEDR8 | GPIO_OSPEEDER_OSPEEDR9 | GPIO_OSPEEDER_OSPEEDR10 | GPIO_OSPEEDER_OSPEEDR15;
GPIOA->PUPDR &= ~(GPIO_PUPDR_PUPDR6 | GPIO_PUPDR_PUPDR7 | GPIO_PUPDR_PUPDR8 | GPIO_PUPDR_PUPDR9 | GPIO_PUPDR_PUPDR10 | GPIO_PUPDR_PUPDR15);
}
```
3. 初始化VG4131S433N0S1模块
```c
void VG4131S433N0S1_Init(void)
{
GPIOA_Init(); //初始化GPIOA
SPI1_Init(); //初始化SPI1
//配置CE引脚为高电平
GPIOA->BSRR |= GPIO_BSRR_BS_6;
//等待模块初始化完成
for(int i = 0; i < 1000000; i++);
}
```
4. 发送数据
```c
void VG4131S433N0S1_SendData(uint8_t* data, uint8_t len)
{
//拉低NSS引脚
GPIOA->BRR |= GPIO_BRR_BR_4;
//发送数据
for(int i = 0; i < len; i++)
{
while((SPI1->SR & SPI_SR_TXE) == 0);
SPI1->DR = data[i];
while((SPI1->SR & SPI_SR_RXNE) == 0);
SPI1->DR;
}
//拉高NSS引脚
GPIOA->BSRR |= GPIO_BSRR_BS_4;
}
```
5. 接收数据
```c
void VG4131S433N0S1_RecvData(uint8_t* data, uint8_t len)
{
//拉低NSS引脚
GPIOA->BRR |= GPIO_BRR_BR_4;
//接收数据
for(int i = 0; i < len; i++)
{
while((SPI1->SR & SPI_SR_TXE) == 0);
SPI1->DR = 0xFF;
while((SPI1->SR & SPI_SR_RXNE) == 0);
data[i] = SPI1->DR;
}
//拉高NSS引脚
GPIOA->BSRR |= GPIO_BSRR_BS_4;
}
```
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