合宙最近新出的cat1通讯模块
本测试项目主要使用到GD32F427的UART串口通讯功能，使用串口发送AT指令，驱动Air780E实现相应的功能。
由于开发板某些串口被占用，本次使用串口1发送AT指令，使用串口2作为调试信息输出（将串口1和模块之间的通讯信息，通过串口2回显到PC端，方便调试）。下面是部分代码：
#define UART1_Clock RCU_USART1
#define UART1_IO_Clock RCU_GPIOD
#define UART1_IO_Port GPIOD
#define UART1_TXD_Pin GPIO_PIN_5
#define UART1_RXD_Pin GPIO_PIN_6
#define UART2_Clock RCU_USART2
#define UART2_IO_Clock RCU_GPIOC
#define UART2_IO_Port GPIOC
#define UART2_TXD_Pin GPIO_PIN_10
#define UART2_RXD_Pin GPIO_PIN_11
void UART1_Init(void)
{
rcu_periph_clock_enable( UART1_Clock); //
rcu_periph_clock_enable(UART1_IO_Clock); //
/* connect port to USARTx_Tx */
gpio_af_set(UART1_IO_Port, GPIO_AF_7, UART1_TXD_Pin);//
/* connect port to USARTx_Rx */
gpio_af_set(UART1_IO_Port, GPIO_AF_7, UART1_RXD_Pin);//
/* configure USART Tx as alternate function push-pull */
gpio_mode_set(UART1_IO_Port, GPIO_MODE_AF, GPIO_PUPD_PULLUP,UART1_TXD_Pin); //
gpio_output_options_set(UART1_IO_Port, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ,UART1_TXD_Pin); //
/* configure USART Rx as alternate function push-pull */
gpio_mode_set(UART1_IO_Port, GPIO_MODE_AF, GPIO_PUPD_PULLUP,UART1_RXD_Pin); //
gpio_output_options_set(UART1_IO_Port, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ,UART1_RXD_Pin); //
/* USART configure */
usart_deinit(USART1);
usart_baudrate_set(USART1,115200);
usart_receive_config(USART1, USART_RECEIVE_ENABLE); //
usart_transmit_config(USART1, USART_TRANSMIT_ENABLE); //
//
usart_enable(USART1);//
nvic_irq_enable(USART1_IRQn, 0, 0);
usart_interrupt_enable(USART1, USART_INT_RBNE);//
}
void UART2_Init(void)
{
rcu_periph_clock_enable( UART2_Clock); //
rcu_periph_clock_enable(UART2_IO_Clock); //
/* connect port to USARTx_Tx */
gpio_af_set(UART2_IO_Port, GPIO_AF_7, UART2_TXD_Pin);//
/* connect port to USARTx_Rx */
gpio_af_set(UART2_IO_Port, GPIO_AF_7, UART2_RXD_Pin);//
/* configure USART Tx as alternate function push-pull */
gpio_mode_set(UART2_IO_Port, GPIO_MODE_AF, GPIO_PUPD_PULLUP,UART2_TXD_Pin); //
gpio_output_options_set(UART2_IO_Port, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ,UART2_TXD_Pin); //
/* configure USART Rx as alternate function push-pull */
gpio_mode_set(UART2_IO_Port, GPIO_MODE_AF, GPIO_PUPD_PULLUP,UART2_RXD_Pin); //
gpio_output_options_set(UART2_IO_Port, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ,UART2_RXD_Pin); //
/* USART configure */
usart_deinit(USART2);
usart_baudrate_set(USART2,115200);
usart_receive_config(USART2, USART_RECEIVE_ENABLE); //
usart_transmit_config(USART2, USART_TRANSMIT_ENABLE); //
//
usart_enable(USART2);//
nvic_irq_enable(USART2_IRQn, 0, 0);
usart_interrupt_enable(USART2, USART_INT_RBNE);//
}
unsigned char Data=0;
void USART1_IRQHandler(void)
{
while((RESET != usart_interrupt_flag_get(USART1, USART_INT_FLAG_RBNE)) &&(RESET != usart_flag_get(USART1, USART_FLAG_RBNE)))
{
/* Read one byte from the receive data register */
Data=usart_data_receive(USART1);
usart_data_transmit(USART2,Data);
}
// if((RESET != usart_flag_get(USART0, USART_FLAG_TBE)) &&(RESET != usart_interrupt_flag_get(USART0, USART_INT_FLAG_TBE)))
// {
// /* Write one byte to the transmit data register */
// usart_data_transmit(USART0,0xff);
// }
}
void UART1_Transmit(unsigned char *Data,unsigned int Lenth)
{
int i=0;
unsigned char U2_Data[256]={0};
strcpy((char*)U2_Data,"Send:");
strcat((char*)U2_Data, (char*)Data);
for(i=0;i<Lenth;i++)
{
usart_data_transmit(USART1,Data[i]);
while(RESET == usart_flag_get(USART1, USART_FLAG_TC));
}
for(i=0;i<strlen((char*)U2_Data);i++)
{
usart_data_transmit(USART2,U2_Data[i]);
while(RESET == usart_flag_get(USART2, USART_FLAG_TC));
}
}
/*!
\brief main function
\param[in] none
\param[out] none
\retval none
*/
int main(void)
{
/* configure systick */
systick_config();
/* enable the LED2 clock */
rcu_periph_clock_enable(RCU_GPIOC);
/* configure LED2 GPIO port */
gpio_mode_set(GPIOC, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN_6);
gpio_output_options_set(GPIOC, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_6);
/* reset LED2 GPIO pin */
gpio_bit_reset(GPIOC, GPIO_PIN_6);
/* enable the User Key GPIO clock */
rcu_periph_clock_enable(RCU_GPIOA);
/* configure key pin as input */
gpio_mode_set(GPIOA, GPIO_MODE_INPUT, GPIO_PUPD_NONE, GPIO_PIN_0);
UART1_Init();
UART2_Init();
while(1) {
//delay_1ms(1000);
/* check whether the key is pressed */
if(RESET == gpio_input_bit_get(GPIOA, GPIO_PIN_0)) {
delay_1ms(100);
/* check whether the key is pressed */
if(RESET == gpio_input_bit_get(GPIOA, GPIO_PIN_0)) {
gpio_bit_write(GPIOC, GPIO_PIN_6, (bit_status)(1 - gpio_input_bit_get(GPIOC, GPIO_PIN_6)));
}
while(RESET == gpio_input_bit_get(GPIOA, GPIO_PIN_0)) {
}
UART1_Transmit((unsigned char *)"AT\r\n",strlen("AT\r\n"));
delay_1ms(1000);
UART1_Transmit((unsigned char *)"AT+CPIN?\r\n",strlen("AT+CPIN?\r\n"));
delay_1ms(1000);
UART1_Transmit((unsigned char *)"AT+CSQ\r\n",strlen("AT+CSQ\r\n"));
delay_1ms(1000);
UART1_Transmit((unsigned char *)"AT+CGATT?\r\n",strlen("AT+CGATT?\r\n"));
delay_1ms(1000);
UART1_Transmit((unsigned char *)"AT+CSTT\r\n",strlen("AT+CSTT\r\n"));
delay_1ms(1000);
UART1_Transmit((unsigned char *)"AT+CIICR\r\n",strlen("AT+CIICR\r\n"));
delay_1ms(1000);
UART1_Transmit((unsigned char *)"AT+CIFSR\r\n",strlen("AT+CIFSR\r\n"));
delay_1ms(1000);
UART1_Transmit((unsigned char *)"AT+CIPSTART=\"TCP\",\"112.125.89.8\",\"36146\"\r\n",strlen("AT+CIPSTART=\"TCP\",\"112.125.89.8\",\"36146\"\r\n"));
delay_1ms(1000);
UART1_Transmit((unsigned char *)"AT+CIPSEND=10\r\n",strlen("AT+CIPSEND=10\r\n"));
delay_1ms(1000);
UART1_Transmit((unsigned char *)"GD32F427V!\r\n",strlen("GD32F427V!\r\n"));
delay_1ms(1000);
}
}
}
下图是接线以及使用TCP通讯的测试结果，可以看到，开发板可以正常的发送和接收到数据，但是中文会显示乱码。
原作者：消逝雨迹
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