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Cherry-pick CF/9f7f2f2

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Dominic Clifton 2017-04-01 18:07:19 +01:00 • committed by jflyper
parent 5bc79368be
commit a4ee4102d7
12 changed files with 446 additions and 90 deletions
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66
src/main/drivers/transponder_ir_arcitimer.c Normal file
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/*
* This file is part of Cleanflight.
*
* Cleanflight 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 3 of the License, or
* (at your option) any later version.
*
* Cleanflight 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 Cleanflight. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdbool.h>
#include <stdint.h>
#include <string.h>
#include <platform.h>
#include "drivers/transponder_ir.h"
#include "drivers/transponder_ir_arcitimer.h"
#if defined(STM32F3) || defined(STM32F4) || defined(UNIT_TEST)
extern const struct transponderVTable arcitimerTansponderVTable;
static uint16_t dmaBufferOffset;
void transponderIrInitArcitimer(transponder_t *transponder){
// from drivers/transponder_ir.h
transponder->gap_toggles = TRANSPONDER_GAP_TOGGLES_ARCITIMER;
transponder->dma_buffer_size = TRANSPONDER_DMA_BUFFER_SIZE_ARCITIMER;
transponder->vTable = &arcitimerTansponderVTable;
transponder->timer_hz = TRANSPONDER_TIMER_MHZ_ARCITIMER;
transponder->timer_carrier_hz = TRANSPONDER_CARRIER_HZ_ARCITIMER;
memset(&(transponder->transponderIrDMABuffer.arcitimer), 0, TRANSPONDER_DMA_BUFFER_SIZE_ARCITIMER);
}
void updateTransponderDMABufferArcitimer(transponder_t *transponder, const uint8_t* transponderData)
{
uint8_t byteIndex;
uint8_t bitIndex;
uint8_t hightStateIndex;
for (byteIndex = 0; byteIndex < TRANSPONDER_DATA_LENGTH_ARCITIMER; byteIndex++) {
uint8_t byteToSend = *transponderData;
transponderData++;
for (bitIndex = 0; bitIndex < TRANSPONDER_BITS_PER_BYTE_ARCITIMER; bitIndex++)
{
bool isHightState = byteToSend & (1 << (bitIndex));
for (hightStateIndex = 0; hightStateIndex < TRANSPONDER_TOGGLES_PER_BIT_ARCITIMER; hightStateIndex++)
{
transponder->transponderIrDMABuffer.arcitimer[dmaBufferOffset] = isHightState ? transponder->bitToggleOne : 0;
dmaBufferOffset++;
}
}
}
dmaBufferOffset = 0;
}
const struct transponderVTable arcitimerTansponderVTable = {
updateTransponderDMABufferArcitimer,
};
#endif