- // U2
- {GPIOA, GPIO_MODE_MUX, GPIO_DRIVE_STRENGTH_STRONGER, GPIO_OUTPUT_PUSH_PULL, GPIO_PULL_NONE, GPIO_MUX_7, GPIO_PINS_2 | GPIO_PINS_3},
- // U3
- {GPIOB, GPIO_MODE_MUX, GPIO_DRIVE_STRENGTH_STRONGER, GPIO_OUTPUT_PUSH_PULL, GPIO_PULL_NONE, GPIO_MUX_7, GPIO_PINS_10 | GPIO_PINS_11},
- /*****************************************************************************
- * [url=home.php?mod=space&uid=247401]@brief[/url] com modle init .
- * @param none
- * [url=home.php?mod=space&uid=266161]@return[/url] none
- * [url=home.php?mod=space&uid=72445]@[/url] Pass/ Fail criteria: none
- *****************************************************************************/
- static void qc_port_Init(uu8 qcMode, uint32_t ulBaudRate, mb_parity_type eParity)
- {
- usart_data_bit_num_type dat_bits;
- usart_stop_bit_num_type stop_bits;
- usart_parity_selection_type parity;
- qc_port_hal_cfg();
- qc_cb_set();
- qc_obj.mode = qcMode;
- qc_obj.dat_send = qc_port_send;
- qc_byte_send = qc_rtu_byte_send;
- // rtu mode
- if (MB_PAR_NONE == eParity)
- {
- dat_bits = USART_DATA_8BITS;
- stop_bits = USART_STOP_2_BIT;
- parity = USART_PARITY_NONE;
- }
- else if (MB_PAR_NONE_1S == eParity)
- {
- dat_bits = USART_DATA_8BITS;
- stop_bits = USART_STOP_1_BIT;
- parity = USART_PARITY_NONE;
- }
- else if (MB_PAR_ODD == eParity)
- {
- dat_bits = USART_DATA_9BITS;
- stop_bits = USART_STOP_1_BIT;
- parity = USART_PARITY_ODD;
- }
- else
- {
- dat_bits = USART_DATA_9BITS;
- stop_bits = USART_STOP_1_BIT;
- parity = USART_PARITY_EVEN;
- }
- // rtu timer
- if (ulBaudRate > 19200)
- {
- qc_obj.tim_sv = 3;
- }
- else
- {
- qc_obj.tim_sv = (com_timer_cal(ulBaudRate, (35 * 11 + 9) / 10, 300, 12000) + 99) / 100;
- }
- usart_init(qc_port, ulBaudRate, dat_bits, stop_bits);
- usart_parity_selection_config(qc_port, parity);
- usart_enable(qc_port, TRUE);
- nvic_irq_set(qc_uart_irqn, 0x00, 1);
- qc_tx1_rx0_enable(0);
- UART_TX_EN();
- }
- /*****************************************************************************
- * [url=home.php?mod=space&uid=247401]@brief[/url] UART interrupt routine.
- * @param none
- * [url=home.php?mod=space&uid=266161]@return[/url] none
- *****************************************************************************/
- void qc_isr()
- {
- volatile uint32_t IntSt;
- volatile uint8_t Data;
- IntSt = qc_port->sts;
- if (IntSt & USART_RDBF_FLAG)
- {
- Data = UART_RCV_DAT();
- if ((IntSt & UART_RX_ERR_FLAG) != 0)
- {
- if (qc_obj.rx_cnt >= 1)
- {
- qc_obj.err_hal = 1;
- }
- UART_RX_ERR_CLR();
- }
- qc_data_rcv(&qc_obj, Data);
- }
- else if ((qc_obj.tx_size <= qc_obj.tx_cnt) && (IntSt & USART_TDC_FLAG))
- {
- qc_send_end(&qc_obj);
- qc_tx1_rx0_enable(0);
- UART_TX_TC_CLR();
- }
- else if (IntSt & USART_TDBE_FLAG)
- {
- if (qc_data_send(&qc_obj, qc_rtu_byte_send, 1))
- {
- UART_TX_TC_EN();
- }
- }
- else
- {
- }
- }
- void qc_init(void)
- {
- // master config
- qc03_Init(QC_MODE_MASTER, 9600, MB_PAR_NONE);
- mb.qc03.os_event_send = mb_os_send;
- mcmd.id = 1;
- mcmd.wdat = &mb_input[0].uval;
- mcmd.rdat = &mb_input[0].uval;
- mcmd.wa = 0;
- mcmd.wn = 96;
- mcmd.ra = 0x1800;
- mcmd.rn = 1;
- mcmd.callback = qc_callback;
- mcmd.attr = QC_MB_ATTR_HOLD_MW;
- mqc_stc_cmd_req(&mb.qc03, 0, &mcmd);
-
- mcmd.wdat = &mb_input[0].uval;
- mcmd.wa = 96;
- mcmd.wn = 96;
- mqc_stc_cmd_req(&mb.qc03, 1, &mcmd);
- // slave config
- qc02_Init(QC_MODE_SLAVE, 9600, MB_PAR_NONE);
- mb.qc02.os_event_send = mb_os_send;
- mcmd.id = 1;
- mcmd.wdat = &mb_input[0].uval;
- mcmd.rdat = &mb_input[0].uval;
- mcmd.wa = 16;
- mcmd.wn = 16;
- mcmd.ra = 0;
- mcmd.rn = 8;
- mcmd.callback = qc_callback;
- mcmd.attr = QC_MB_ATTR_HOLD_MW;
- mqc_stc_cmd_req(&mb.qc02, 0, &mcmd);
- mqc_stc_cmd_req(&mb.qc02, 1, &mcmd);
- }
测试时，将评估板PA2连接PB10, PA3连接PB11可完成两个端口通信，运行结果如下：
为方便运行时观察，可以显示串口通信信息到OLED显示屏，效果如下：
任务资源信息：
至此，modbus移植测试成功，可以用来连接各种modbus接口的传感器和PLC设备了。
下面附上测试代码：
AT32F423_EVAL.rar
(4.59 MB, 下载次数: 39)
编译环境：IAR EW for Arm 9.40
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