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474 lines
12 KiB
474 lines
12 KiB
/* USER CODE BEGIN Header */
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/**
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******************************************************************************
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* @file : main.c
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* @brief : Main program body
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright (c) 2020 STMicroelectronics.
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* All rights reserved.</center></h2>
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*
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* This software component is licensed by ST under Ultimate Liberty license
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* SLA0044, the "License"; You may not use this file except in compliance with
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* the License. You may obtain a copy of the License at:
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* www.st.com/SLA0044
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*
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******************************************************************************
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*/
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/*
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This file is part of VP-Digi.
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VP-Digi is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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VP-Digi is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with VP-Digi. If not, see <http://www.gnu.org/licenses/>.
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*/
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/* USER CODE END Header */
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/* Includes ------------------------------------------------------------------*/
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#include "main.h"
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#include "usb_device.h"
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/* Private includes ----------------------------------------------------------*/
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/* USER CODE BEGIN Includes */
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#include "drivers/modem.h"
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#include <stdint.h>
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#include "ax25.h"
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#include "drivers/uart.h"
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#include "drivers/systick.h"
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#include "stm32f1xx.h"
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#include "digipeater.h"
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#include "common.h"
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#include "drivers/watchdog.h"
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#include "beacon.h"
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#include "terminal.h"
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#include "config.h"
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/* USER CODE END Includes */
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/* Private typedef -----------------------------------------------------------*/
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/* USER CODE BEGIN PTD */
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/* USER CODE END PTD */
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/* Private define ------------------------------------------------------------*/
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/* USER CODE BEGIN PD */
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/* USER CODE END PD */
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/* Private macro -------------------------------------------------------------*/
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/* USER CODE BEGIN PM */
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/* USER CODE END PM */
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/* Private variables ---------------------------------------------------------*/
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/* USER CODE BEGIN PV */
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/* USER CODE END PV */
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/* Private function prototypes -----------------------------------------------*/
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void SystemClock_Config(void);
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static void MX_GPIO_Init(void);
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/* USER CODE BEGIN PFP */
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/* USER CODE END PFP */
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/* Private user code ---------------------------------------------------------*/
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/* USER CODE BEGIN 0 */
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/**
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* \brief Handle received frame from RF
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*/
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void handleFrame(void)
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{
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uint8_t modemReceived = ax25.frameReceived; //store states
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ax25.frameReceived = 0; //clear flag
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uint8_t bufto[FRAMELEN + 30], buf[FRAMELEN]; //bufory dla konwersji ramki z formatu APRS do TNC2
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uint16_t bufidx = 0;
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uint16_t i = ax25.frameBufRd;
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while(i != ax25.frameBufWr)
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{
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if(ax25.frameBuf[i] != 0xFF)
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{
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buf[bufidx++] = ax25.frameBuf[i++]; //store frame in temporary buffer
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}
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else
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{
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break;
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}
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i %= (FRAMEBUFLEN);
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}
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ax25.frameBufRd = ax25.frameBufWr;
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for(i = 0; i < (bufidx); i++)
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{
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if(buf[i] & 1)
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break; //look for path end bit
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}
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Uart *u = &uart1;
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for(uint8_t i = 0; i < 2; i++)
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{
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if(u->mode == MODE_KISS) //check if KISS mode
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{
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uart_sendByte(u, 0xc0); //send data in kiss format
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uart_sendByte(u, 0x00);
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for(uint16_t j = 0; j < (bufidx); j++)
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{
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uart_sendByte(u, buf[j]);
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}
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uart_sendByte(u, 0xc0);
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uart_transmitStart(u);
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}
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u = &uart2;
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}
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if(USBmode == MODE_KISS) //check if USB in KISS mode
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{
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uint8_t t[2] = {0xc0, 0};
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CDC_Transmit_FS(&t[0], 1);
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CDC_Transmit_FS(&t[1], 1);
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for(uint16_t i = 0; i < (bufidx); i++)
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{
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CDC_Transmit_FS(&buf[i], 1);
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}
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CDC_Transmit_FS(&t[0], 1);
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}
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if(((USBmode == MODE_MONITOR) || (uart1.mode == MODE_MONITOR) || (uart2.mode == MODE_MONITOR)))
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{
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common_toTNC2(buf, bufidx, bufto); //convert to TNC2 format
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//in general, the RMS of the frame is calculated (excluding preamble!)
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//it it calculated from samples ranging from -4095 to 4095 (amplitude of 4095)
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//that should give a RMS of around 2900 for pure sine wave
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//for pure square wave it should be equal to the amplitude (around 4095)
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//real data contains lots of imperfections (especially mark/space amplitude imbalance) and this value is far smaller than 2900 for standard frames
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//division by 9 was selected by trial and error to provide a value of 100(%) when the input signal had peak-peak voltage of 3.3V
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//this probably should be done in a different way, like some peak amplitude tracing
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ax25.sLvl /= 9;
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if(ax25.sLvl > 100)
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{
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term_sendMonitor((uint8_t*)"\r\nInput level too high! Please reduce so most stations are around 50-70%.\r\n", 0);
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}
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if(ax25.sLvl < 10)
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{
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term_sendMonitor((uint8_t*)"\r\nInput level too low! Please increase so most stations are around 50-70%.\r\n", 0);
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}
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term_sendMonitor((uint8_t*)"(AX.25) Frame received [", 0); //show which modem received the frame: [FP] (flat and preemphasized), [FD] (flat and deemphasized - in flat audio input mode)
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//[F_] (only flat), [_P] (only preemphasized) or [_D] (only deemphasized - in flat audio input mode)
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uint8_t t[2] = {0};
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if(modemReceived & 1)
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{
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t[0] = 'F';
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}
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else
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t[0] = '_';
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if(modemReceived & 2)
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{
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if(afskCfg.flatAudioIn)
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t[1] = 'D';
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else
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t[1] = 'P';
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}
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else
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t[1] = '_';
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term_sendMonitor(t, 2);
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term_sendMonitor((uint8_t*)"], signal level ", 0);
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term_sendMonitorNumber(ax25.sLvl);
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term_sendMonitor((uint8_t*)"%: ", 0);
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term_sendMonitor(bufto, 0);
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term_sendMonitor((uint8_t*)"\r\n", 0);
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}
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if(digi.enable)
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{
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Digi_digipeat(buf, bufidx);
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}
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}
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/* USER CODE END 0 */
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/**
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* @brief The application entry point.
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* @retval int
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*/
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int main(void)
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{
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/* USER CODE BEGIN 1 */
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/* USER CODE END 1 */
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/* MCU Configuration--------------------------------------------------------*/
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/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
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HAL_Init();
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/* USER CODE BEGIN Init */
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/* USER CODE END Init */
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/* Configure the system clock */
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SystemClock_Config();
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/* USER CODE BEGIN SysInit */
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SysTick_init();
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//force usb re-enumeration after reset
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RCC->APB2ENR |= RCC_APB2ENR_IOPAEN; //pull D+ to ground for a moment
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GPIOA->CRH |= GPIO_CRH_MODE12_1;
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GPIOA->CRH &= ~GPIO_CRH_CNF12;
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GPIOA->BSRR = GPIO_BSRR_BR12;
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uint32_t t = ticks + 10;
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while(t > ticks);;
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GPIOA->CRH &= ~GPIO_CRH_MODE12;
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GPIOA->CRH |= GPIO_CRH_CNF12_0;
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/* USER CODE END SysInit */
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/* Initialize all configured peripherals */
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MX_GPIO_Init();
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MX_USB_DEVICE_Init();
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/* USER CODE BEGIN 2 */
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Wdog_init(); //initialize watchdog
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//set some initial values in case there is no configuration saved in memory
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uart1.baudrate = 9600;
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uart2.baudrate = 9600;
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afskCfg.usePWM = 0;
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afskCfg.flatAudioIn = 0;
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ax25Cfg.quietTime = 300;
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ax25Cfg.txDelayLength = 300;
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ax25Cfg.txTailLength = 30;
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digi.dupeTime = 30;
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Config_read();
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Ax25_init();
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uart_init(&uart1, USART1, uart1.baudrate);
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uart_init(&uart2, USART2, uart2.baudrate);
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uart_config(&uart1, 1);
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uart_config(&uart2, 1);
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Afsk_init();
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Beacon_init();
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autoResetTimer = autoReset * 360000;
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/* USER CODE END 2 */
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/* Infinite loop */
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/* USER CODE BEGIN WHILE */
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static uint32_t usbKissTimer = 0;
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while (1)
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{
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/* USER CODE END WHILE */
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/* USER CODE BEGIN 3 */
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Wdog_reset();
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if(ax25.frameReceived)
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handleFrame();
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Digi_viscousRefresh(); //refresh viscous-delay buffers
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Ax25_transmitBuffer(); //transmit buffer (will return if nothing to be transmitted)
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Ax25_transmitCheck(); //check for pending transmission request
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if(USBint) //USB "interrupt"
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{
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USBint = 0; //clear
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if(USBmode == MODE_KISS) //is USB in KISS mode?
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usbKissTimer = ticks + 500; //set timeout to 5s
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term_handleSpecial(TERM_USB); //handle special characters (e.g. backspace)
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if((usbcdcdata[0] == 0xc0) && /*(usbcdcdata[1] == 0x00) &&*/ (usbcdcdata[usbcdcidx - 1] == 0xc0)) //probably a KISS frame
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{
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USBrcvd = DATA_KISS;
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usbKissTimer = 0;
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}
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if(((usbcdcdata[usbcdcidx - 1] == '\r') || (usbcdcdata[usbcdcidx - 1] == '\n'))) //proabably a command
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{
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USBrcvd = DATA_TERM;
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usbKissTimer = 0;
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}
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}
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if((usbKissTimer > 0) && (ticks >= usbKissTimer)) //USB KISS timer timeout
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{
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usbcdcidx = 0;
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memset(usbcdcdata, 0, UARTBUFLEN);
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usbKissTimer = 0;
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}
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if(USBrcvd != DATA_NOTHING)
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{
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term_parse(usbcdcdata, usbcdcidx, TERM_USB, USBrcvd, USBmode);
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USBrcvd = DATA_NOTHING;
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usbcdcidx = 0;
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memset(usbcdcdata, 0, UARTBUFLEN);
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}
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if(uart1.rxflag != DATA_NOTHING)
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{
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term_parse(uart1.bufrx, uart1.bufrxidx, TERM_UART1, uart1.rxflag, uart1.mode);
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uart1.rxflag = DATA_NOTHING;
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uart1.bufrxidx = 0;
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memset(uart1.bufrx, 0, UARTBUFLEN);
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}
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if(uart2.rxflag != DATA_NOTHING)
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{
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term_parse(uart2.bufrx, uart2.bufrxidx, TERM_UART2, uart2.rxflag, uart2.mode);
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uart2.rxflag = DATA_NOTHING;
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uart2.bufrxidx = 0;
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memset(uart2.bufrx, 0, UARTBUFLEN);
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}
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Beacon_check(); //check beacons
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if(((autoResetTimer != 0) && (ticks > autoResetTimer)) || (ticks > 4294960000))
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NVIC_SystemReset();
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}
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/* USER CODE END 3 */
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}
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/**
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* @brief System Clock Configuration
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* @retval None
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*/
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void SystemClock_Config(void)
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{
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RCC_OscInitTypeDef RCC_OscInitStruct = {0};
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RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
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RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
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/** Initializes the CPU, AHB and APB busses clocks
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*/
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_ON;
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RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
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RCC_OscInitStruct.HSIState = RCC_HSI_ON;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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{
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Error_Handler();
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}
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/** Initializes the CPU, AHB and APB busses clocks
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*/
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RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
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|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
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{
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Error_Handler();
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}
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PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USB;
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PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_PLL_DIV1_5;
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if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
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{
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Error_Handler();
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}
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}
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/**
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* @brief GPIO Initialization Function
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* @param None
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* @retval None
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*/
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static void MX_GPIO_Init(void)
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{
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/* GPIO Ports Clock Enable */
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__HAL_RCC_GPIOD_CLK_ENABLE();
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__HAL_RCC_GPIOA_CLK_ENABLE();
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__HAL_RCC_GPIOB_CLK_ENABLE();
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}
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/* USER CODE BEGIN 4 */
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/* USER CODE END 4 */
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/**
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* @brief This function is executed in case of error occurrence.
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* @retval None
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*/
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void Error_Handler(void)
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{
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/* USER CODE BEGIN Error_Handler_Debug */
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/* User can add his own implementation to report the HAL error return state */
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/* USER CODE END Error_Handler_Debug */
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file: pointer to the source file name
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* @param line: assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t *file, uint32_t line)
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{
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/* USER CODE BEGIN 6 */
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/* User can add his own implementation to report the file name and line number,
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tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* USER CODE END 6 */
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}
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#endif /* USE_FULL_ASSERT */
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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