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SerialSTM.cpp
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SerialSTM.cpp
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// SPDX-License-Identifier: GPL-2.0-only
/*
* Digital Voice Modem - Modem Firmware
* GPLv2 Open Source. Use is subject to license terms.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright (C) 2016 Jim McLaughlin, KI6ZUM
* Copyright (C) 2016,2017,2018 Andy Uribe, CA6JAU
* Copyright (c) 2017 Jonathan Naylor, G4KLX
* Copyright (C) 2018,2022,2024 Bryan Biedenkapp, N2PLL
*
*/
#include "Globals.h"
#include "SerialPort.h"
#include "STM_UART.h"
#if defined(STM32F4XX) || defined(STM32F7XX)
#if defined(STM32F4XX)
#include <stm32f4xx_flash.h>
#endif
#if defined(STM32F7XX)
#include <stm32f7xx_flash.h>
#endif
// ---------------------------------------------------------------------------
// Constants
// ---------------------------------------------------------------------------
#define STM32_CNF_PAGE_ADDR (uint32_t)0x08010000
#define STM32_CNF_PAGE ((uint32_t *)0x08010000)
#define STM32_CNF_SECTOR FLASH_Sector_4
/*
Pin definitions:
- Host communication:
USART1 - TXD PA9 - RXD PA10 (STM32F4 Pi Board (MMDVM-Pi board), STM32F4 POG Board, STM32F4 DVM1 Board)
- Serial repeater:
UART5 - TXD PC12 - RXD PD2 (STM32F4 Pi Board (MMDVM-Pi board), STM32F4 POG Board)
*/
// ---------------------------------------------------------------------------
// Global Functions and Variables
// ---------------------------------------------------------------------------
extern "C" {
void USART1_IRQHandler();
void UART5_IRQHandler();
}
#if defined(STM32F4_PI) || defined(STM32F4_POG) || defined(STM32F4_DVMV1) || defined(STM32F4_EDA_405) || defined(STM32F4_EDA_446)
// ---------------------------------------------------------------------------
// UART1
// ---------------------------------------------------------------------------
static STM_UART m_USART1;
/**
* @brief Helper to handle the USART1 IRQ.
*/
void USART1_IRQHandler()
{
m_USART1.handleIRQ();
}
/**
* @brief Initializes the USART1.
* @param speed Port speed.
*/
void InitUSART1(int speed)
{
// USART1 - TXD PA9 - RXD PA10 - pins on mmdvm pi board
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource9, GPIO_AF_USART1);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource10, GPIO_AF_USART1);
// USART IRQ init
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_Init(&NVIC_InitStructure);
// Configure USART as alternate function
GPIO_StructInit(&GPIO_InitStructure);
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_10; // Tx | Rx
GPIO_InitStructure.GPIO_Speed = GPIO_High_Speed;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// Configure USART baud rate
USART_StructInit(&USART_InitStructure);
USART_InitStructure.USART_BaudRate = speed;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USART1, &USART_InitStructure);
USART_Cmd(USART1, ENABLE);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
m_USART1.init(USART1);
}
#endif
// ---------------------------------------------------------------------------
// UART5
// ---------------------------------------------------------------------------
static STM_UART m_USART5;
/**
* @brief Helper to handle the USART5 IRQ.
*/
void UART5_IRQHandler()
{
m_USART5.handleIRQ();
}
/**
* @brief Initializes the USART5.
* @param speed Port speed.
*/
void InitUART5(int speed)
{
// UART5 - TXD PC12 - RXD PD2
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART5, ENABLE);
GPIO_PinAFConfig(GPIOC, GPIO_PinSource12, GPIO_AF_UART5);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource2, GPIO_AF_UART5);
// USART IRQ init
NVIC_InitStructure.NVIC_IRQChannel = UART5_IRQn;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_Init(&NVIC_InitStructure);
// Configure USART as alternate function
GPIO_StructInit(&GPIO_InitStructure);
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12; // Tx
GPIO_InitStructure.GPIO_Speed = GPIO_Fast_Speed;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; // Rx
GPIO_Init(GPIOD, &GPIO_InitStructure);
// Configure USART baud rate
USART_StructInit(&USART_InitStructure);
USART_InitStructure.USART_BaudRate = speed;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(UART5, &USART_InitStructure);
USART_Cmd(UART5, ENABLE);
USART_ITConfig(UART5, USART_IT_RXNE, ENABLE);
m_USART5.init(UART5);
}
// ---------------------------------------------------------------------------
// Private Class Members
// ---------------------------------------------------------------------------
/* Reads data from the modem flash parititon. */
void SerialPort::flashRead()
{
uint8_t reply[249U];
reply[0U] = DVM_SHORT_FRAME_START;
reply[1U] = 249U;
reply[2U] = CMD_FLSH_READ;
::memcpy(reply + 3U, (void*)STM32_CNF_PAGE, 246U);
writeInt(1U, reply, 249U);
}
/* Writes data to the modem flash partition. */
uint8_t SerialPort::flashWrite(const uint8_t* data, uint8_t length)
{
if (length > 249U) {
return RSN_FLASH_WRITE_TOO_BIG;
}
FLASH_Unlock();
FLASH_ClearFlag(FLASH_FLAG_BSY | FLASH_FLAG_EOP | FLASH_FLAG_WRPERR);
#if defined(STM32F4XX) || defined(STM32F7XX)
if (FLASH_EraseSector(STM32_CNF_SECTOR, VoltageRange_3) != FLASH_COMPLETE) {
FLASH_Lock();
return RSN_FAILED_ERASE_FLASH;
}
#elif defined(STM32F10X_MD)
if (FLASH_ErasePage(STM32_CNF_PAGE_ADDR) != FLASH_COMPLETE) {
FLASH_Lock();
return RSN_FAILED_ERASE_FLASH;
}
#endif
// write data to the user flash area
uint32_t address = STM32_CNF_PAGE_ADDR;
uint8_t i = 0U;
while (i < length) {
uint32_t word =
(data[i + 3] << 24) +
(data[i + 2] << 16) +
(data[i + 1] << 8) +
(data[i + 0] << 0);
if (FLASH_ProgramWord(address, word) == FLASH_COMPLETE) {
address += 4;
i += 4;
}
else {
FLASH_Lock();
return RSN_FAILED_WRITE_FLASH;
}
}
FLASH_Lock();
return RSN_OK;
}
/* */
void SerialPort::beginInt(uint8_t n, int speed)
{
switch (n) {
case 1U:
#if defined(STM32F4_PI) || defined(STM32F4_POG) || defined(STM32F4_DVMV1) || defined(STM32F4_EDA_405) || defined(STM32F4_EDA_446)
InitUSART1(speed);
#endif
break;
case 3U:
InitUART5(speed);
break;
default:
break;
}
}
/* */
int SerialPort::availableInt(uint8_t n)
{
switch (n) {
case 1U:
#if defined(STM32F4_PI) || defined(STM32F4_POG) || defined(STM32F4_DVMV1) || defined(STM32F4_EDA_405) || defined(STM32F4_EDA_446)
return m_USART1.available();
#endif
case 3U:
return m_USART5.available();
default:
return 0;
}
}
/* */
int SerialPort::availableForWriteInt(uint8_t n)
{
switch (n) {
case 1U:
#if defined(STM32F4_PI) || defined(STM32F4_POG) || defined(STM32F4_DVMV1) || defined(STM32F4_EDA_405) || defined(STM32F4_EDA_446)
return m_USART1.availableForWrite();
#endif
case 3U:
return m_USART5.availableForWrite();
default:
return 0;
}
}
/* */
uint8_t SerialPort::readInt(uint8_t n)
{
switch (n) {
case 1U:
#if defined(STM32F4_PI) || defined(STM32F4_POG) || defined(STM32F4_DVMV1) || defined(STM32F4_EDA_405) || defined(STM32F4_EDA_446)
return m_USART1.read();
#endif
case 3U:
return m_USART5.read();
default:
return 0U;
}
}
/* */
void SerialPort::writeInt(uint8_t n, const uint8_t* data, uint16_t length, bool flush)
{
switch (n) {
case 1U:
#if defined(STM32F4_PI) || defined(STM32F4_POG) || defined(STM32F4_DVMV1) || defined(STM32F4_EDA_405) || defined(STM32F4_EDA_446)
m_USART1.write(data, length);
if (flush)
m_USART1.flush();
#endif
break;
case 3U:
m_USART5.write(data, length);
if (flush)
m_USART5.flush();
break;
default:
break;
}
}
#endif // defined(STM32F4XX)