esp-idf/components/freemodbus/port/portserial.c

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freemodbus: Fix bug with incorrect coils read mask Contains two different component folders per each implementation (serial_master and serial_slave) with concrete ports. Added common public api for master and slave and common interface for master and slave implementation. Add support of cmake system (added cmake files). Added sdkconfig.defaults files for slave and master modbus examples. Updated make file and KConfig for freemodbus component Update according to review and fix doxygen warnings Fix Doxyfile to pass documentation build Update headers and change interface file names as per review comments Merge branch feature/freemodbus_move_rs485_mode_control Update after review: The stack modbus folder updated to support master and slave ports together and moved into freemodbus/modbus Stack and port files updated to remove duplicated simbols Make file, KConfig and CMakeLists.txt updated to compile master and slave stacks, common interface and concrete implementations of ports Stack callback functions execute callbacks using interface pointer from concrete port implementation User can instantiate any of concrete port using common API (only one concrete port at a time) and it does not require to select port by KConfig Port pins and mode configuration moved into example files from port files to allow user select pins and port mode (customer request) Changes tested using pymodbus, ModbusPoll and communication between two boards Updated DoxyFile according to public include path Fix maximum instance size for slave (merge from master of customer issue) Fix critical section issue TW#28622 (change spin lock based critical section to semaphore) Move serial port files into component port folder for master and slave accordingly Fix example issue showed in the log when IO slave is not configured correctly Fix conflicts while merging from origin/master Fix errors handling in modbus controller interface + some final corrections according to review Update maximum allowed number of slaves in the network segment Fix bug with incorrect coils read mask Closes https://github.com/espressif/esp-idf/issues/858
2018-10-19 09:51:27 -04:00
/* Copyright 2018 Espressif Systems (Shanghai) PTE LTD
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* FreeModbus Libary: ESP32 Port Demo Application
* Copyright (C) 2010 Christian Walter <cwalter@embedded-solutions.at>
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* IF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* File: $Id: portother.c,v 1.1 2010/06/06 13:07:20 wolti Exp $
*/
#include "port.h"
#include "driver/uart.h"
#include "freertos/queue.h" // for queue support
#include "soc/uart_periph.h"
#include "driver/gpio.h"
#include "esp_log.h" // for esp_log
#include "esp_err.h" // for ESP_ERROR_CHECK macro
/* ----------------------- Modbus includes ----------------------------------*/
#include "mb.h"
#include "mbport.h"
#include "sdkconfig.h" // for KConfig options
freemodbus: Fix bug with incorrect coils read mask Contains two different component folders per each implementation (serial_master and serial_slave) with concrete ports. Added common public api for master and slave and common interface for master and slave implementation. Add support of cmake system (added cmake files). Added sdkconfig.defaults files for slave and master modbus examples. Updated make file and KConfig for freemodbus component Update according to review and fix doxygen warnings Fix Doxyfile to pass documentation build Update headers and change interface file names as per review comments Merge branch feature/freemodbus_move_rs485_mode_control Update after review: The stack modbus folder updated to support master and slave ports together and moved into freemodbus/modbus Stack and port files updated to remove duplicated simbols Make file, KConfig and CMakeLists.txt updated to compile master and slave stacks, common interface and concrete implementations of ports Stack callback functions execute callbacks using interface pointer from concrete port implementation User can instantiate any of concrete port using common API (only one concrete port at a time) and it does not require to select port by KConfig Port pins and mode configuration moved into example files from port files to allow user select pins and port mode (customer request) Changes tested using pymodbus, ModbusPoll and communication between two boards Updated DoxyFile according to public include path Fix maximum instance size for slave (merge from master of customer issue) Fix critical section issue TW#28622 (change spin lock based critical section to semaphore) Move serial port files into component port folder for master and slave accordingly Fix example issue showed in the log when IO slave is not configured correctly Fix conflicts while merging from origin/master Fix errors handling in modbus controller interface + some final corrections according to review Update maximum allowed number of slaves in the network segment Fix bug with incorrect coils read mask Closes https://github.com/espressif/esp-idf/issues/858
2018-10-19 09:51:27 -04:00
#include "port_serial_slave.h"
// Note: This code uses mixed coding standard from legacy IDF code and used freemodbus stack
// A queue to handle UART event.
static QueueHandle_t xMbUartQueue;
static TaskHandle_t xMbTaskHandle;
static const CHAR *TAG = "MB_SERIAL";
// The UART hardware port number
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static UCHAR ucUartNumber = UART_NUM_MAX - 1;
static BOOL bRxStateEnabled = FALSE; // Receiver enabled flag
static BOOL bTxStateEnabled = FALSE; // Transmitter enabled flag
void vMBPortSerialEnable(BOOL bRxEnable, BOOL bTxEnable)
{
// This function can be called from xMBRTUTransmitFSM() of different task
if (bTxEnable) {
bTxStateEnabled = TRUE;
} else {
bTxStateEnabled = FALSE;
}
if (bRxEnable) {
//uart_enable_rx_intr(ucUartNumber);
bRxStateEnabled = TRUE;
vTaskResume(xMbTaskHandle); // Resume receiver task
} else {
vTaskSuspend(xMbTaskHandle); // Block receiver task
bRxStateEnabled = FALSE;
}
}
static USHORT usMBPortSerialRxPoll(size_t xEventSize)
{
BOOL xReadStatus = TRUE;
USHORT usCnt = 0;
if (bRxStateEnabled) {
// Get received packet into Rx buffer
while(xReadStatus && (usCnt++ <= MB_SERIAL_BUF_SIZE)) {
// Call the Modbus stack callback function and let it fill the buffers.
xReadStatus = pxMBFrameCBByteReceived(); // callback to execute receive FSM
}
uart_flush_input(ucUartNumber);
// Send event EV_FRAME_RECEIVED to allow stack process packet
#if !CONFIG_FMB_TIMER_PORT_ENABLED
// Let the stack know that T3.5 time is expired and data is received
(void)pxMBPortCBTimerExpired(); // calls callback xMBRTUTimerT35Expired();
#endif
ESP_LOGD(TAG, "RX: %d bytes\n", usCnt);
}
return usCnt;
}
BOOL xMBPortSerialTxPoll(void)
{
USHORT usCount = 0;
BOOL bNeedPoll = TRUE;
if( bTxStateEnabled ) {
// Continue while all response bytes put in buffer or out of buffer
while((bNeedPoll) && (usCount++ < MB_SERIAL_BUF_SIZE)) {
// Calls the modbus stack callback function to let it fill the UART transmit buffer.
bNeedPoll = pxMBFrameCBTransmitterEmpty( ); // callback to transmit FSM
}
ESP_LOGD(TAG, "MB_TX_buffer send: (%d) bytes\n", (uint16_t)usCount);
// Waits while UART sending the packet
esp_err_t xTxStatus = uart_wait_tx_done(ucUartNumber, MB_SERIAL_TX_TOUT_TICKS);
vMBPortSerialEnable(TRUE, FALSE);
MB_PORT_CHECK((xTxStatus == ESP_OK), FALSE, "mb serial sent buffer failure.");
return TRUE;
}
return FALSE;
}
static void vUartTask(void *pvParameters)
{
uart_event_t xEvent;
USHORT usResult = 0;
for(;;) {
if (xQueueReceive(xMbUartQueue, (void*)&xEvent, portMAX_DELAY) == pdTRUE) {
ESP_LOGD(TAG, "MB_uart[%d] event:", ucUartNumber);
switch(xEvent.type) {
//Event of UART receving data
case UART_DATA:
ESP_LOGD(TAG,"Data event, length: %d", xEvent.size);
// This flag set in the event means that no more
// data received during configured timeout and UART TOUT feature is triggered
if (xEvent.timeout_flag) {
// Read received data and send it to modbus stack
usResult = usMBPortSerialRxPoll(xEvent.size);
ESP_LOGD(TAG,"Timeout occured, processed: %d bytes", usResult);
}
break;
//Event of HW FIFO overflow detected
case UART_FIFO_OVF:
ESP_LOGD(TAG, "hw fifo overflow\n");
xQueueReset(xMbUartQueue);
break;
//Event of UART ring buffer full
case UART_BUFFER_FULL:
ESP_LOGD(TAG, "ring buffer full\n");
xQueueReset(xMbUartQueue);
uart_flush_input(ucUartNumber);
break;
//Event of UART RX break detected
case UART_BREAK:
ESP_LOGD(TAG, "uart rx break\n");
break;
//Event of UART parity check error
case UART_PARITY_ERR:
ESP_LOGD(TAG, "uart parity error\n");
break;
//Event of UART frame error
case UART_FRAME_ERR:
ESP_LOGD(TAG, "uart frame error\n");
break;
default:
ESP_LOGD(TAG, "uart event type: %d\n", xEvent.type);
break;
}
}
}
vTaskDelete(NULL);
}
BOOL xMBPortSerialInit(UCHAR ucPORT, ULONG ulBaudRate,
UCHAR ucDataBits, eMBParity eParity)
{
esp_err_t xErr = ESP_OK;
// Set communication port number
ucUartNumber = ucPORT;
// Configure serial communication parameters
UCHAR ucParity = UART_PARITY_DISABLE;
UCHAR ucData = UART_DATA_8_BITS;
switch(eParity){
case MB_PAR_NONE:
ucParity = UART_PARITY_DISABLE;
break;
case MB_PAR_ODD:
ucParity = UART_PARITY_ODD;
break;
case MB_PAR_EVEN:
ucParity = UART_PARITY_EVEN;
break;
default:
ESP_LOGE(TAG, "Incorrect parity option: %d", eParity);
return FALSE;
}
switch(ucDataBits){
case 5:
ucData = UART_DATA_5_BITS;
break;
case 6:
ucData = UART_DATA_6_BITS;
break;
case 7:
ucData = UART_DATA_7_BITS;
break;
case 8:
ucData = UART_DATA_8_BITS;
break;
default:
ucData = UART_DATA_8_BITS;
break;
}
uart_config_t xUartConfig = {
.baud_rate = ulBaudRate,
.data_bits = ucData,
.parity = ucParity,
.stop_bits = UART_STOP_BITS_1,
.flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
.rx_flow_ctrl_thresh = 2,
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.use_ref_tick = UART_SCLK_APB,
};
// Set UART config
xErr = uart_param_config(ucUartNumber, &xUartConfig);
MB_PORT_CHECK((xErr == ESP_OK),
FALSE, "mb config failure, uart_param_config() returned (0x%x).", xErr);
// Install UART driver, and get the queue.
xErr = uart_driver_install(ucUartNumber, MB_SERIAL_BUF_SIZE, MB_SERIAL_BUF_SIZE,
MB_QUEUE_LENGTH, &xMbUartQueue, MB_PORT_SERIAL_ISR_FLAG);
MB_PORT_CHECK((xErr == ESP_OK), FALSE,
"mb serial driver failure, uart_driver_install() returned (0x%x).", xErr);
#if !CONFIG_FMB_TIMER_PORT_ENABLED
// Set timeout for TOUT interrupt (T3.5 modbus time)
xErr = uart_set_rx_timeout(ucUartNumber, MB_SERIAL_TOUT);
MB_PORT_CHECK((xErr == ESP_OK), FALSE,
"mb serial set rx timeout failure, uart_set_rx_timeout() returned (0x%x).", xErr);
#endif
// Set always timeout flag to trigger timeout interrupt even after rx fifo full
uart_set_always_rx_timeout(ucUartNumber, true);
// Create a task to handle UART events
BaseType_t xStatus = xTaskCreate(vUartTask, "uart_queue_task", MB_SERIAL_TASK_STACK_SIZE,
NULL, MB_SERIAL_TASK_PRIO, &xMbTaskHandle);
if (xStatus != pdPASS) {
vTaskDelete(xMbTaskHandle);
// Force exit from function with failure
MB_PORT_CHECK(FALSE, FALSE,
"mb stack serial task creation error. xTaskCreate() returned (0x%x).",
xStatus);
} else {
vTaskSuspend(xMbTaskHandle); // Suspend serial task while stack is not started
}
return TRUE;
}
void vMBPortSerialClose(void)
{
(void)vTaskSuspend(xMbTaskHandle);
(void)vTaskDelete(xMbTaskHandle);
ESP_ERROR_CHECK(uart_driver_delete(ucUartNumber));
}
BOOL xMBPortSerialPutByte(CHAR ucByte)
{
// Send one byte to UART transmission buffer
// This function is called by Modbus stack
UCHAR ucLength = uart_write_bytes(ucUartNumber, &ucByte, 1);
return (ucLength == 1);
}
// Get one byte from intermediate RX buffer
BOOL xMBPortSerialGetByte(CHAR* pucByte)
{
assert(pucByte != NULL);
USHORT usLength = uart_read_bytes(ucUartNumber, (uint8_t*)pucByte, 1, MB_SERIAL_RX_TOUT_TICKS);
return (usLength == 1);
}