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SerialSTM.cpp
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SerialSTM.cpp
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/**
* Digital Voice Modem - DSP Firmware (Hotspot)
* GPLv2 Open Source. Use is subject to license terms.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* @package DVM / DSP Firmware (Hotspot)
*
*/
//
// Based on code from the MMDVM_HS project. (https://github.com/juribeparada/MMDVM_HS)
// Licensed under the GPLv2 License (https://opensource.org/licenses/GPL-2.0)
//
/*
* Copyright (C) 2016 by Jim McLaughlin KI6ZUM
* Copyright (C) 2016,2017,2018,2019 by Andy Uribe CA6JAU
* Copyright (C) 2021-2022 Bryan Biedenkapp N2PLL
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "Globals.h"
#include "SerialPort.h"
#include "STM_UART.h"
#if defined(STM32F10X_MD)
#include <stm32f10x_flash.h>
#if defined(STM32_USB_HOST)
#include <usb_serial.h>
#endif
#if defined(STM32_USART1_HOST) && defined(STM32_USB_HOST)
#error "You have to select STM32_USART1_HOST or STM32_USB_HOST, but not both"
#endif
// ---------------------------------------------------------------------------
// Constants
// ---------------------------------------------------------------------------
#define STM32_CNF_PAGE_ADDR (uint32_t)0x0800FC00
#define STM32_CNF_PAGE ((uint32_t *)0x0800FC00)
/*
Pin definitions:
- Host communication:
1) USART1 - TXD PA9 - RXD PA10
2) USB VCOM
- Serial repeater
USART2 - TXD PA2 - RXD PA3
*/
#if defined(STM32_USART1_HOST) || defined(SERIAL_REPEATER_USART1)
// ---------------------------------------------------------------------------
// Global Functions and Variables
// ---------------------------------------------------------------------------
extern "C" {
void USART1_IRQHandler();
void USART2_IRQHandler();
}
// ---------------------------------------------------------------------------
// UART1
// ---------------------------------------------------------------------------
static STM_UART m_USART1;
/// <summary>
///
/// </summary>
void USART1_IRQHandler()
{
m_USART1.handleIRQ();
}
/// <summary>
///
/// </summary>
/// <param name="speed"></param>
void InitUSART1(int speed)
{
// USART1 - TXD PA9 - RXD PA10
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
// USART IRQ init
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 15;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 15;
NVIC_Init(&NVIC_InitStructure);
// Configure USART as alternate function
GPIO_StructInit(&GPIO_InitStructure);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; // Tx
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; // Rx
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
// ---------------------------------------------------------------------------
// UART2
// ---------------------------------------------------------------------------
static STM_UART m_USART2;
/// <summary>
///
/// </summary>
void USART2_IRQHandler()
{
m_USART2.handleIRQ();
}
/// <summary>
///
/// </summary>
/// <param name="speed"></param>
void InitUSART2(int speed)
{
// USART2 - TXD PA2 - RXD PA3
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
// USART IRQ init
NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 15;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 15;
NVIC_Init(&NVIC_InitStructure);
// Configure USART as alternate function
GPIO_StructInit(&GPIO_InitStructure);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; // Tx
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; // Rx
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(USART2, &USART_InitStructure);
USART_Cmd(USART2, ENABLE);
USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);
m_USART2.init(USART2);
}
// ---------------------------------------------------------------------------
// Private Class Members
// ---------------------------------------------------------------------------
/// <summary>
///
/// </summary>
void SerialPort::flashRead()
{
uint8_t reply[249U];
reply[0U] = DVM_FRAME_START;
reply[1U] = 249U;
reply[2U] = CMD_FLSH_READ;
::memcpy(reply + 3U, (void*)STM32_CNF_PAGE, 246U);
DEBUG1("SerialPort: flashRead(): read bytes from flash");
writeInt(1U, reply, 249U);
}
/// <summary>
///
/// </summary>
/// <param name="data"></param>
/// <param name="length"></param>
uint8_t SerialPort::flashWrite(const uint8_t* data, uint8_t length)
{
if (length > 249U) {
return RSN_FLASH_WRITE_TOO_BIG;
}
DEBUG1("SerialPort: flashWrite(): unlocking flash");
FLASH_Unlock();
FLASH_ClearFlag(FLASH_FLAG_BSY | FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPRTERR);
#if defined(STM32F4XX)
DEBUG1("SerialPort: flashWrite(): erasing flash sector");
if (FLASH_EraseSector(STM32_CNF_SECTOR, VoltageRange_3) != FLASH_COMPLETE) {
FLASH_Lock();
return RSN_FAILED_ERASE_FLASH;
}
#elif defined(STM32F10X_MD)
DEBUG1("SerialPort: flashWrite(): erasing flash page");
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);
DEBUG3("SerialPort: flashWrite(): writing byte data", address, i);
if (FLASH_ProgramWord(address, word) == FLASH_COMPLETE) {
address += 4;
i += 4;
}
else {
FLASH_Lock();
return RSN_FAILED_WRITE_FLASH;
}
}
DEBUG1("SerialPort: flashWrite(): finished writing, locking flash");
FLASH_Lock();
return RSN_OK;
}
/// <summary>
///
/// </summary>
/// <param name="n"></param>
/// <param name="speed"></param>
void SerialPort::beginInt(uint8_t n, int speed)
{
switch (n) {
case 1U:
#if defined(STM32_USART1_HOST)
InitUSART1(speed);
#elif defined(STM32_USB_HOST)
usbserial.begin();
#endif
break;
case 3U:
InitUSART2(speed);
break;
default:
break;
}
}
/// <summary>
///
/// </summary>
/// <param name="n"></param>
/// <returns></returns>
int SerialPort::availableInt(uint8_t n)
{
switch (n) {
case 1U:
#if defined(STM32_USART1_HOST)
return m_USART1.available();
#elif defined(STM32_USB_HOST)
return usbserial.available();
#endif
case 3U:
m_USART2.available();
default:
return 0;
}
}
/// <summary>
///
/// </summary>
/// <param name="n"></param>
/// <returns></returns>
int SerialPort::availableForWriteInt(uint8_t n)
{
switch (n) {
case 1U:
#if defined(STM32_USART1_HOST)
return m_USART1.availableForWrite();
#elif defined(STM32_USB_HOST)
//return usbserial.availableForWrite();
return 1U; // we don't have this -- so fake it
#endif
case 3U:
return m_USART2.availableForWrite();
default:
return 0;
}
}
/// <summary>
///
/// </summary>
/// <param name="n"></param>
/// <returns></returns>
uint8_t SerialPort::readInt(uint8_t n)
{
switch (n) {
case 1U:
#if defined(STM32_USART1_HOST)
return m_USART1.read();
#elif defined(STM32_USB_HOST)
return usbserial.read();
#endif
case 3U:
return m_USART2.read();
default:
return 0U;
}
}
/// <summary>
///
/// </summary>
/// <param name="n"></param>
/// <param name="data"></param>
/// <param name="length"></param>
/// <param name="flush"></param>
void SerialPort::writeInt(uint8_t n, const uint8_t* data, uint16_t length, bool flush)
{
switch (n) {
case 1U:
#if defined(STM32_USART1_HOST)
m_USART1.write(data, length);
if (flush)
m_USART1.flush();
#elif defined(STM32_USB_HOST)
usbserial.write(data, length);
if (flush)
usbserial.flush();
#endif
break;
case 3U:
m_USART2.write(data, length);
if (flush)
m_USART2.flush();
break;
default:
break;
}
}
#endif