#include "includes.h" #include "Uart.h" ///////////////////////////////////////////////////////////////////////////// uint8_t usart0TX_Buffer[USART0_TX_SIZE] = {0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08}; uint8_t usart0RX_Buffer[USART0_RX_SIZE] = {0}; void dma_init_uart0(void) { dma_parameter_struct dma_init_Usart0_TX; dma_parameter_struct dma_init_Usart0_RX; rcu_periph_clock_enable(RCU_DMA0); dma_deinit(DMA0, DMA_CH3); dma_deinit(DMA0, DMA_CH4); /* initialize DMA0 channel3(Usart0_TX) */ dma_init_Usart0_TX.direction = DMA_MEMORY_TO_PERIPHERAL; dma_init_Usart0_TX.memory_addr = (uint32_t)usart0TX_Buffer; dma_init_Usart0_TX.memory_inc = DMA_MEMORY_INCREASE_ENABLE; dma_init_Usart0_TX.memory_width = DMA_MEMORY_WIDTH_8BIT; dma_init_Usart0_TX.number = (uint32_t)USART0_TX_SIZE; dma_init_Usart0_TX.periph_addr = (uint32_t)(&USART_DATA(USART0)); dma_init_Usart0_TX.periph_inc = DMA_PERIPH_INCREASE_DISABLE; dma_init_Usart0_TX.periph_width = DMA_PERIPHERAL_WIDTH_8BIT; dma_init_Usart0_TX.priority = DMA_PRIORITY_LOW; dma_init(DMA0, DMA_CH3, &dma_init_Usart0_TX); dma_circulation_disable(DMA0, DMA_CH3); /* initialize DMA0 channel4(Usart0_RX) */ dma_init_Usart0_RX.direction = DMA_PERIPHERAL_TO_MEMORY; dma_init_Usart0_RX.memory_addr = (uint32_t)usart0RX_Buffer; dma_init_Usart0_RX.memory_inc = DMA_MEMORY_INCREASE_ENABLE; dma_init_Usart0_RX.memory_width = DMA_MEMORY_WIDTH_8BIT; dma_init_Usart0_RX.number = (uint32_t)USART0_RX_SIZE; dma_init_Usart0_RX.periph_addr = (uint32_t)(&USART_DATA(USART0)); dma_init_Usart0_RX.periph_inc = DMA_PERIPH_INCREASE_DISABLE; dma_init_Usart0_RX.periph_width = DMA_PERIPHERAL_WIDTH_8BIT; dma_init_Usart0_RX.priority = DMA_PRIORITY_HIGH;//DMA_PRIORITY_LOW; dma_init(DMA0, DMA_CH4, &dma_init_Usart0_RX); dma_circulation_disable(DMA0, DMA_CH4);//circulate or not makes no difference dma_memory_to_memory_disable(DMA0,DMA_CH3); dma_memory_to_memory_disable(DMA0,DMA_CH4); /* enable all DMA channels you need */ dma_channel_enable(DMA0,DMA_CH4); dma_channel_disable(DMA0,DMA_CH3); } void usart0_config(void) { /* enable GPIO clock */ rcu_periph_clock_enable(RCU_GPIOA); /* enable USART clock */ rcu_periph_clock_enable(RCU_USART0); /* connect port to USARTx_Tx */ gpio_init(GPIOA, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_9); /* connect port to USARTx_Rx */ gpio_init(GPIOA, GPIO_MODE_IN_FLOATING, GPIO_OSPEED_50MHZ, GPIO_PIN_10); /* USART configure */ usart_deinit(USART0); usart_word_length_set(USART0, USART_WL_8BIT); usart_stop_bit_set(USART0, USART_STB_1BIT); usart_parity_config(USART0, USART_PM_NONE); usart_baudrate_set(USART0, 115200U); usart_hardware_flow_rts_config(USART0, USART_RTS_DISABLE); usart_hardware_flow_cts_config(USART0, USART_CTS_DISABLE); usart_receive_config(USART0, USART_RECEIVE_ENABLE); usart_transmit_config(USART0, USART_TRANSMIT_ENABLE); /* config USARTx_TX transmit by DMA */ usart_dma_transmit_config(USART0,USART_DENT_ENABLE); usart_dma_receive_config(USART0,USART_DENR_ENABLE); /* USART1 IRQ set */ nvic_irq_enable(USART0_IRQn, 1, 0); // nvic_irq_enable(DMA0_Channel6_IRQn, 1, 1); usart_interrupt_enable(USART0, USART_INT_IDLE); // usart_interrupt_enable(USART0, USART_INT_TC); // 使能发送完成中断 usart_enable(USART0); } void USART0_IRQHandler(void) { volatile uint8_t len = 0; if((RESET != usart_interrupt_flag_get(USART0, USART_INT_FLAG_IDLE)) \ && (RESET != usart_flag_get(USART0, USART_FLAG_IDLEF))) { usart_interrupt_flag_clear(USART0, USART_INT_FLAG_IDLE);// usart_flag_clear(USART0, USART_FLAG_IDLEF); dma_channel_disable(DMA0, DMA_CH4); usart_data_receive(USART0); len = USART0_RX_SIZE - dma_transfer_number_get(DMA0,DMA_CH4); if(len>5) En_Queue(uart0_rx_sq,usart0RX_Buffer,len,len);//数据入队，可多次调用 dma_memory_address_config(DMA0,DMA_CH4,(uint32_t)usart0RX_Buffer); dma_transfer_number_config(DMA0,DMA_CH4, USART0_RX_SIZE);/* reset DMA_Channel CNT */ dma_channel_enable(DMA0,DMA_CH4);/* enable USART1_RX DMA_Channel */ } } /*------------------------------------------485----------------------------------------*/ void RS485_USART_IRQHandler(void) { volatile uint8_t len = 0; if((RESET != usart_interrupt_flag_get(RS485_USARTx, USART_INT_FLAG_IDLE)) \ && (RESET != usart_flag_get(RS485_USARTx, USART_FLAG_IDLEF))) { usart_interrupt_flag_clear(RS485_USARTx, USART_INT_FLAG_IDLE);// usart_flag_clear(RS485_USARTx, USART_FLAG_IDLEF); dma_channel_disable(RS485_DMAx, RS485_DMA_CH_RX); usart_data_receive(RS485_USARTx); len = USART3_RX_SIZE - dma_transfer_number_get(RS485_DMAx,RS485_DMA_CH_RX); if(len>5) En_Queue(uart3_rx_sq,usart485RX_Buffer,len,len);//数据入队，可多次调用 // fifo_write(&g_rxfifo,usart485RX_Buffer,len); dma_memory_address_config(RS485_DMAx, RS485_DMA_CH_RX,(uint32_t)usart485RX_Buffer); dma_transfer_number_config(RS485_DMAx, RS485_DMA_CH_RX, USART3_RX_SIZE);/* reset DMA_Channel CNT */ dma_channel_enable(RS485_DMAx, RS485_DMA_CH_RX);/* enable USART1_RX DMA_Channel */ // g_uart485.bRcv = 1; } else if(RESET != usart_interrupt_flag_get(RS485_USARTx,USART_INT_FLAG_TC)) { // 发送完成中断 usart_interrupt_flag_clear(RS485_USARTx, USART_INT_FLAG_TC);// usart_flag_clear(RS485_USARTx, USART_FLAG_TC); // g_uart485.bSdFinish = 1; // gpio_bit_reset(GPIOC, GPIO_PIN_12); RS485_RX(); } } void RS485_DMA0_CH_TX_IRQHandler(void)//usart1 发送dma { if(dma_interrupt_flag_get(RS485_DMAx, RS485_DMA_CH_TX, DMA_INT_FLAG_FTF)){ dma_interrupt_flag_clear(RS485_DMAx, RS485_DMA_CH_TX, DMA_INT_FLAG_G); //g_uart485.bSdFinish = 1; //gpio_bit_reset(GPIOC, GPIO_PIN_12); usart_interrupt_enable(RS485_USARTx, USART_INT_TC); // 使能接收完成中断 } } void USART1_IRQHandler(void) { RS485_USART_IRQHandler(); } void DMA0_Channel6_IRQHandler(void) { RS485_DMA0_CH_TX_IRQHandler(); } uint8_t usart485TX_Buffer[USART3_TX_SIZE] = {0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08}; uint8_t usart485RX_Buffer[USART3_RX_SIZE] = {0}; //uart485Info_t g_uart485; void dam_init_uart_485(void) { dma_parameter_struct dma_init_Usart3_TX; dma_parameter_struct dma_init_Usart3_RX; rcu_periph_clock_enable(RS485_DMA_RCU); dma_deinit(RS485_DMAx, RS485_DMA_CH_RX); // RX dma_deinit(RS485_DMAx, RS485_DMA_CH_TX); // TX /* initialize DMA1 channel4(Uart3_TX) */ dma_init_Usart3_TX.direction = DMA_MEMORY_TO_PERIPHERAL; dma_init_Usart3_TX.memory_addr = (uint32_t)usart485TX_Buffer; dma_init_Usart3_TX.memory_inc = DMA_MEMORY_INCREASE_ENABLE; dma_init_Usart3_TX.memory_width = DMA_MEMORY_WIDTH_8BIT; dma_init_Usart3_TX.number = (uint32_t)USART3_TX_SIZE; dma_init_Usart3_TX.periph_addr = (uint32_t)(&USART_DATA(RS485_USARTx)); dma_init_Usart3_TX.periph_inc = DMA_PERIPH_INCREASE_DISABLE; dma_init_Usart3_TX.periph_width = DMA_PERIPHERAL_WIDTH_8BIT; dma_init_Usart3_TX.priority = DMA_PRIORITY_LOW; dma_init(RS485_DMAx, RS485_DMA_CH_TX, &dma_init_Usart3_TX); dma_circulation_disable(RS485_DMAx, RS485_DMA_CH_TX); /* initialize DMA1 channel2(Uart3_RX) */ dma_init_Usart3_RX.direction = DMA_PERIPHERAL_TO_MEMORY; dma_init_Usart3_RX.memory_addr = (uint32_t)usart485RX_Buffer; dma_init_Usart3_RX.memory_inc = DMA_MEMORY_INCREASE_ENABLE; dma_init_Usart3_RX.memory_width = DMA_MEMORY_WIDTH_8BIT; dma_init_Usart3_RX.number = (uint32_t)USART3_RX_SIZE; dma_init_Usart3_RX.periph_addr = (uint32_t)(&USART_DATA(RS485_USARTx)); dma_init_Usart3_RX.periph_inc = DMA_PERIPH_INCREASE_DISABLE; dma_init_Usart3_RX.periph_width = DMA_PERIPHERAL_WIDTH_8BIT; dma_init_Usart3_RX.priority = DMA_PRIORITY_LOW; dma_init(RS485_DMAx, RS485_DMA_CH_RX, &dma_init_Usart3_RX); dma_circulation_disable(RS485_DMAx, RS485_DMA_CH_RX);//circulate or not makes no difference dma_memory_to_memory_disable(RS485_DMAx,RS485_DMA_CH_RX); dma_memory_to_memory_disable(RS485_DMAx,RS485_DMA_CH_TX); /* enable all DMA channels you need */ dma_channel_enable(RS485_DMAx,RS485_DMA_CH_RX); dma_channel_disable(RS485_DMAx,RS485_DMA_CH_TX); } /*------------------------------------------------------------------------------------ * 485初始化 UART3 * -----------------------------------------------------------------------------------*/ void usart_485_dma_init(void) { rcu_periph_clock_enable(RS485_GPIO_RCU);/* enable GPIO clock */ rcu_periph_clock_enable(RCU_AF); rcu_periph_clock_enable(RS483_USART_RCU);/* enable USART clock */ gpio_init(RS485_GPIOx, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, RS485_GPIO_PIN_TX);/* connect port to USARTx_Tx */ gpio_init(RS485_GPIOx, GPIO_MODE_IN_FLOATING, GPIO_OSPEED_50MHZ, RS485_GPIO_PIN_RX);/* connect port to USARTx_Rx */ //设置rs485芯片，收发模式控制引脚 PC12，低电平接收，高电平发送，初始化为接收模式 gpio_init(RS485_GPIOx, GPIO_MODE_OUT_PP, GPIO_OSPEED_50MHZ, RS485_GPIO_PIN_CTL); // gpio_bit_reset(GPIOC, GPIO_PIN_12); RS485_RX(); /* USART configure */ usart_deinit(RS485_USARTx); usart_word_length_set(RS485_USARTx, USART_WL_8BIT); usart_stop_bit_set(RS485_USARTx, USART_STB_1BIT); usart_parity_config(RS485_USARTx, USART_PM_NONE); usart_baudrate_set(RS485_USARTx, 115200U); usart_hardware_flow_rts_config(RS485_USARTx, USART_RTS_DISABLE); usart_hardware_flow_cts_config(RS485_USARTx, USART_CTS_DISABLE); usart_receive_config(RS485_USARTx, USART_RECEIVE_ENABLE); usart_transmit_config(RS485_USARTx, USART_TRANSMIT_ENABLE); usart_enable(RS485_USARTx); /* config USARTx_TX transmit by DMA */ usart_dma_transmit_config(RS485_USARTx,USART_DENT_ENABLE); usart_dma_receive_config(RS485_USARTx,USART_DENR_ENABLE); /* UART3 IRQ set */ nvic_irq_enable(RS485_USART_IRQ, 4, 0); usart_interrupt_enable(RS485_USARTx, USART_INT_FLAG_IDLE); dma_interrupt_enable(RS485_DMAx,RS485_DMA_CH_TX,DMA_INT_FTF); /* 使能DAM发送完成中断 */ dma_channel_enable(RS485_DMAx, RS485_DMA_CH_TX); nvic_irq_enable(RS485_DMA_TX_IRQ, 4, 1); } void usart_tx_dma_send(uint32_t usart_periph,uint8_t* data_buffer,uint16_t length) { volatile uint32_t i = 0; if(usart_periph==USART0) { /* Channel disable */ dma_channel_disable(DMA0, DMA_CH3); dma_memory_address_config(DMA0, DMA_CH3,(uint32_t)data_buffer); dma_transfer_number_config(DMA0,DMA_CH3,length); /* enable DMA channel to start send */ dma_channel_enable(DMA0, DMA_CH3); } else if(usart_periph==RS485_USARTx) { /* Channel disable */ // gpio_bit_set(GPIOC, GPIO_PIN_12); RS485_TX(); dma_interrupt_flag_clear(RS485_DMAx, RS485_DMA_CH_TX, DMA_INT_FLAG_FTF); usart_interrupt_flag_clear(RS485_USARTx,USART_INT_FLAG_TC); usart_flag_clear(RS485_USARTx,USART_FLAG_TC); for(i=0;i<0xFF;i++); // if(dma_flag_get(DMA1,DMA_FLAG_FTF)!=RESET){ // } dma_channel_disable(RS485_DMAx, RS485_DMA_CH_TX); dma_memory_address_config(RS485_DMAx, RS485_DMA_CH_TX,(uint32_t)data_buffer); dma_transfer_number_config(RS485_DMAx,RS485_DMA_CH_TX,length); /* enable DMA channel to start send */ dma_channel_enable(RS485_DMAx, RS485_DMA_CH_TX); usart_dma_transmit_config(RS485_USARTx,USART_DENT_ENABLE); } } int fputc(int ch, FILE *f) { if(g_ptTest.bTestStart==PT_OFF) { usart_data_transmit(USART0, (uint8_t)ch); while(RESET == usart_flag_get(USART0, USART_FLAG_TC)); } return ch; } void data_dump(const char *name, uint8_t *data, uint16_t length) { int index = 0; printf("%s Data Info: \r\n ", name); for(index = 0;index < length;index++) { if((index%4 == 0)&&index) { if((index%16 == 0)&&index) { printf("\r\n "); } else { printf(" "); } } printf("%02x ", *(data + index)); } printf("\r\n"); } ////////////////////////////////////////////////////////////////////////////