mirror of
https://github.com/opentx/opentx.git
synced 2025-07-12 19:10:19 +03:00
261 lines
7.1 KiB
C++
261 lines
7.1 KiB
C++
/*
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* Copyright (C) OpenTX
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*
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* Based on code named
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* th9x - http://code.google.com/p/th9x
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* er9x - http://code.google.com/p/er9x
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* gruvin9x - http://code.google.com/p/gruvin9x
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*
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* License GPLv2: http://www.gnu.org/licenses/gpl-2.0.html
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program 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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*/
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#include "opentx.h"
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Fifo<uint8_t, 64> btTxFifo;
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Fifo<uint8_t, 64> btRxFifo;
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enum BluetoothState
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{
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BLUETOOTH_INIT,
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BLUETOOTH_WAIT_TTM,
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BLUETOOTH_WAIT_BAUDRATE_CHANGE,
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BLUETOOTH_OK,
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};
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enum BluetoothWriteState
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{
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BLUETOOTH_WRITE_IDLE,
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BLUETOOTH_WRITE_INIT,
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BLUETOOTH_WRITING,
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BLUETOOTH_WRITE_DONE
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};
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volatile uint8_t bluetoothState = BLUETOOTH_INIT;
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volatile uint8_t bluetoothWriteState = BLUETOOTH_WRITE_IDLE;
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void bluetoothInit(uint32_t baudrate)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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USART_InitTypeDef USART_InitStructure;
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USART_DeInit(BT_USART);
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RCC_AHB1PeriphClockCmd(BT_RCC_AHB1Periph, ENABLE);
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART6, ENABLE);
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GPIO_InitStructure.GPIO_Pin = BT_EN_GPIO_PIN;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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GPIO_Init(BT_EN_GPIO, &GPIO_InitStructure);
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#if defined(BT_BRTS_GPIO_PIN)
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GPIO_InitStructure.GPIO_Pin = BT_BRTS_GPIO_PIN;
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GPIO_Init(BT_BRTS_GPIO, &GPIO_InitStructure);
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GPIO_SetBits(BT_BRTS_GPIO, BT_BRTS_GPIO_PIN);
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#endif
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#if defined(BT_BCTS_GPIO_PIN)
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GPIO_InitStructure.GPIO_Pin = BT_BCTS_GPIO_PIN;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
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GPIO_Init(BT_BCTS_GPIO, &GPIO_InitStructure);
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#endif
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GPIO_InitStructure.GPIO_Pin = BT_TX_GPIO_PIN|BT_RX_GPIO_PIN;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
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GPIO_Init(BT_GPIO_TXRX, &GPIO_InitStructure);
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GPIO_PinAFConfig(BT_GPIO_TXRX, BT_TX_GPIO_PinSource, BT_GPIO_AF);
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GPIO_PinAFConfig(BT_GPIO_TXRX, BT_RX_GPIO_PinSource, BT_GPIO_AF);
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USART_DeInit(BT_USART);
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USART_InitStructure.USART_BaudRate = baudrate;
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USART_InitStructure.USART_Parity = USART_Parity_No;
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USART_InitStructure.USART_StopBits = USART_StopBits_1;
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USART_InitStructure.USART_WordLength = USART_WordLength_8b;
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USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
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USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
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USART_Init(BT_USART, &USART_InitStructure);
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USART_Cmd(BT_USART, ENABLE);
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USART_ITConfig(BT_USART, USART_IT_RXNE, ENABLE);
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NVIC_InitTypeDef NVIC_InitStructure;
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NVIC_InitStructure.NVIC_IRQChannel = BT_USART_IRQn;
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 8;
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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GPIO_ResetBits(BT_EN_GPIO, BT_EN_GPIO_PIN); // open bluetooth
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}
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void bluetoothDone()
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{
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GPIO_SetBits(BT_EN_GPIO, BT_EN_GPIO_PIN); // close bluetooth
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}
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extern "C" void USART6_IRQHandler(void)
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{
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DEBUG_INTERRUPT(INT_BLUETOOTH);
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if (USART_GetITStatus(BT_USART, USART_IT_RXNE) != RESET) {
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USART_ClearITPendingBit(BT_USART, USART_IT_RXNE);
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uint8_t byte = USART_ReceiveData(BT_USART);
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btRxFifo.push(byte);
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}
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if (USART_GetITStatus(BT_USART, USART_IT_TXE) != RESET) {
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uint8_t byte;
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bool result = btTxFifo.pop(byte);
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if (result) {
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USART_SendData(BT_USART, byte);
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}
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else {
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USART_ITConfig(BT_USART, USART_IT_TXE, DISABLE);
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bluetoothWriteState = BLUETOOTH_WRITE_DONE;
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}
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}
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}
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void bluetoothWrite(const void * buffer, int len)
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{
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uint8_t * data = (uint8_t *)buffer;
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for (int i=0; i<len; ++i) {
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btTxFifo.push(data[i]);
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}
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}
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void bluetoothWriteString(const char * str)
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{
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while (*str != 0) {
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btTxFifo.push(*str++);
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}
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}
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void bluetoothWriteWakeup(void)
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{
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if (bluetoothWriteState == BLUETOOTH_WRITE_IDLE) {
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if (!btTxFifo.isEmpty()) {
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bluetoothWriteState = BLUETOOTH_WRITE_INIT;
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#if defined(BT_BRTS_GPIO_PIN)
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GPIO_ResetBits(BT_BRTS_GPIO, BT_BRTS_GPIO_PIN);
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#endif
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}
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}
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else if (bluetoothWriteState == BLUETOOTH_WRITE_INIT) {
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bluetoothWriteState = BLUETOOTH_WRITING;
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USART_ITConfig(BT_USART, USART_IT_TXE, ENABLE);
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}
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else if (bluetoothWriteState == BLUETOOTH_WRITE_DONE) {
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bluetoothWriteState = BLUETOOTH_WRITE_IDLE;
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#if defined(BT_BRTS_GPIO_PIN)
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GPIO_SetBits(BT_BRTS_GPIO, BT_BRTS_GPIO_PIN);
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#endif
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}
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}
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void bluetoothWakeup(void)
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{
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#if defined(BLUETOOTH_CLI_PASSTHROUGH)
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bluetoothWriteWakeup();
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return;
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#else // #if defined(BLUETOOTH_CLI_PASSTHROUGH)
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// NOTICE: code below doesn't work on Horus beta!
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if (!g_eeGeneral.bluetoothEnable) {
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if (bluetoothState != BLUETOOTH_INIT) {
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bluetoothDone();
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bluetoothState = BLUETOOTH_INIT;
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}
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}
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else {
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if (bluetoothState != BLUETOOTH_OK) {
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static tmr10ms_t waitEnd = 0;
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if (bluetoothState == BLUETOOTH_INIT) {
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TRACE("BLUETOOTH_INIT");
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bluetoothInit(BLUETOOTH_DEFAULT_BAUDRATE);
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const char btMessage[] = "TTM:REN-";
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bluetoothWriteString(btMessage);
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uint8_t len = ZLEN(g_eeGeneral.bluetoothName);
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for (int i=0; i<len; i++) {
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btTxFifo.push(idx2char(g_eeGeneral.bluetoothName[i]));
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}
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bluetoothState = BLUETOOTH_WAIT_TTM;
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waitEnd = get_tmr10ms() + 25; // 250ms
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}
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else if (bluetoothState == BLUETOOTH_WAIT_TTM) {
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if (get_tmr10ms() > waitEnd) {
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TRACE("bt rename");
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char ttm[] = "TTM:REN";
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int index = 0;
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uint8_t c;
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bool found = false;
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while (btRxFifo.pop(c)) {
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if (c == ttm[index]) {
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index++;
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if (index == sizeof(ttm)-1) {
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found = true;
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break;
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}
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}
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else {
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index = 0;
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}
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}
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if (found) {
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TRACE("bt OK");
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bluetoothState = BLUETOOTH_OK;
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}
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else {
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TRACE("bt failure");
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bluetoothInit(BLUETOOTH_FACTORY_BAUDRATE);
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const char btMessage[] = "TTM:BPS-115200";
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bluetoothWriteString(btMessage);
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bluetoothState = BLUETOOTH_WAIT_BAUDRATE_CHANGE;
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waitEnd = get_tmr10ms() + 250; // 2.5s
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}
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}
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}
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else if (bluetoothState == BLUETOOTH_WAIT_BAUDRATE_CHANGE) {
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if (get_tmr10ms() > waitEnd) {
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bluetoothState = BLUETOOTH_INIT;
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}
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}
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}
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bluetoothWriteWakeup();
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}
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#endif // #if defined(BLUETOOTH_CLI_PASSTHROUGH)
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}
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uint8_t bluetoothReady()
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{
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return (bluetoothState == BLUETOOTH_OK);
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}
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int bluetoothRead(void * buffer, int len)
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{
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int result = 0;
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uint8_t * data = (uint8_t *)buffer;
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while (result < len) {
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uint8_t byte;
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if (!btRxFifo.pop(byte)) {
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break;
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}
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data[result++] = byte;
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}
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return result;
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}
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