#define GPS USART3
#define GPS_CLK RCC_APB1Periph_USART3
#define GPS_TX_PIN GPIO_Pin_10
#define GPS_TX_GPIO_PORT GPIOC
#define GPS_TX_GPIO_CLK RCC_AHB1Periph_GPIOC
#define GPS_TX_SOURCE GPIO_PinSource10
#define GPS_TX_AF GPIO_AF_USART3
#define GPS_RX_PIN GPIO_Pin_11
#define GPS_RX_GPIO_PORT GPIOC
#define GPS_RX_GPIO_CLK RCC_AHB1Periph_GPIOC
#define GPS_RX_SOURCE GPIO_PinSource11
#define GPS_RX_AF GPIO_AF_USART3
#define GPS_IRQn USART3_IRQn
void test_USART3_Configuration(uint32_t bandrate)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
RCC_AHB1PeriphClockCmd(GPS_TX_GPIO_CLK,ENABLE);
RCC_AHB1PeriphClockCmd(GPS_RX_GPIO_CLK,ENABLE);
RCC_APB1PeriphClockCmd(GPS_CLK,ENABLE);
GPIO_PinAFConfig(GPS_TX_GPIO_PORT, GPS_TX_SOURCE, GPS_TX_AF);
GPIO_PinAFConfig(GPS_RX_GPIO_PORT, GPS_RX_SOURCE, GPS_RX_AF);
//TX ÍÆÍìÊä³ö
GPIO_InitStructure.GPIO_Pin = GPS_TX_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPS_TX_GPIO_PORT, &GPIO_InitStructure);
//RXÉÏÀÊäÈë
GPIO_InitStructure.GPIO_Pin = GPS_RX_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
// GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
// GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPS_RX_GPIO_PORT, &GPIO_InitStructure);
NVIC_InitTypeDef NVIC_InitStructure;
// NVIC_PriorityGroupConfig
/* Enable the USARTx Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = GPS_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
USART_InitStructure.USART_BaudRate = bandrate;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(GPS, &USART_InitStructure);
USART_ITConfig(GPS,USART_IT_RXNE,ENABLE);
// USART_ClearFlag(USART2,USART_FLAG_TC);
// USART_ITConfig(WIFI,USART_IT_TXE,ENABLE);
USART_Cmd(GPS, ENABLE);
} |