kopia lustrzana https://github.com/sq8vps/vp-digi
396 wiersze
11 KiB
C
396 wiersze
11 KiB
C
/* 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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#ifdef ENABLE_FX25
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#include "fx25.h"
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#endif
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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
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*/
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static void handleFrame(void)
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{
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uint8_t modemBitmap = Ax25GetReceivedFrameBitmap(); //store states
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Ax25ClearReceivedFrameBitmap();
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uint8_t *buf;
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uint16_t size = 0;
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uint16_t signalLevel = 0;
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while(Ax25ReadNextRxFrame(&buf, &size, &signalLevel))
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{
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TermSendToAll(MODE_KISS, buf, size);
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if(((UartUsb.mode == MODE_MONITOR) || (Uart1.mode == MODE_MONITOR) || (Uart2.mode == MODE_MONITOR)))
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{
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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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//TODO: this probably should be done in a different way, like some peak amplitude tracing
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signalLevel /= 9;
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if(signalLevel > 100)
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{
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TermSendToAll(MODE_MONITOR, (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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else if(signalLevel < 10)
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{
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TermSendToAll(MODE_MONITOR, (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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TermSendToAll(MODE_MONITOR, (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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for(uint8_t i = 0; i < ModemGetDemodulatorCount(); i++)
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{
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if(modemBitmap & (1 << i))
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{
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enum ModemPrefilter m = ModemGetFilterType(i);
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switch(m)
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{
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case PREFILTER_PREEMPHASIS:
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TermSendToAll(MODE_MONITOR, (uint8_t*)"P", 1);
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break;
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case PREFILTER_DEEMPHASIS:
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TermSendToAll(MODE_MONITOR, (uint8_t*)"D", 1);
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break;
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case PREFILTER_FLAT:
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default:
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TermSendToAll(MODE_MONITOR, (uint8_t*)"F", 1);
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break;
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}
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}
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else
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TermSendToAll(MODE_MONITOR, (uint8_t*)"_", 1);
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}
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TermSendToAll(MODE_MONITOR, (uint8_t*)"], signal level ", 0);
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TermSendNumberToAll(MODE_MONITOR, signalLevel);
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TermSendToAll(MODE_MONITOR, (uint8_t*)"%: ", 0);
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SendTNC2(buf, size);
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TermSendToAll(MODE_MONITOR, (uint8_t*)"\r\n", 0);
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}
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DigiDigipeat(buf, size);
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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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SysTickInit();
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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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Delay(100);
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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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WdogInit(); //initialize watchdog
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memset(&beacon, 0, sizeof(beacon));
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memset(&Ax25Config, 0, sizeof(Ax25Config));
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memset(&ModemConfig, 0, sizeof(ModemConfig));
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memset(&DigiConfig, 0, sizeof(DigiConfig));
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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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ModemConfig.usePWM = 0;
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ModemConfig.flatAudioIn = 0;
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Ax25Config.quietTime = 300;
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Ax25Config.txDelayLength = 300;
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Ax25Config.txTailLength = 30;
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DigiConfig.dupeTime = 30;
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ConfigRead();
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Ax25Init();
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#ifdef ENABLE_FX25
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Fx25Init();
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#endif
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UartInit(&Uart1, USART1, Uart1.baudrate);
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UartInit(&Uart2, USART2, Uart2.baudrate);
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UartInit(&UartUsb, NULL, 1);
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UartConfig(&Uart1, 1);
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UartConfig(&Uart2, 1);
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UartConfig(&UartUsb, 1);
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ModemInit();
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BeaconInit();
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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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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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WdogReset();
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if(Ax25GetReceivedFrameBitmap())
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handleFrame();
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DigiViscousRefresh(); //refresh viscous-delay buffers
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Ax25TransmitBuffer(); //transmit buffer (will return if nothing to be transmitted)
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Ax25TransmitCheck(); //check for pending transmission request
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if(UartUsb.rxType != DATA_NOTHING)
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{
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TermHandleSpecial(&UartUsb);
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if(UartUsb.rxType != DATA_USB)
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{
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TermParse(&UartUsb);
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UartClearRx(&UartUsb);
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}
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UartUsb.rxType = DATA_NOTHING;
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}
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if(Uart1.rxType != DATA_NOTHING)
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{
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TermParse(&Uart1);
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UartClearRx(&Uart1);
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}
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if(Uart2.rxType != DATA_NOTHING)
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{
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TermParse(&Uart2);
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UartClearRx(&Uart2);
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}
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UartHandleKissTimeout(&UartUsb);
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BeaconCheck(); //check beacons
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if(SysTickGet() > 0xFFFFF000) //going to wrap around soon - hard reset the device
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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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