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SPRacingF3Mini - First cut of transponder system.

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Implementation is DMA buffer based, just like the WS2811 LED Strip code,
so that there is minimal impact on flight performance.

Currently the code is mutually exclusive with the LED_STRIP code and
there is no means to set the transponder code.
This commit is contained in:
Dominic Clifton 2016-01-07 16:45:04 +01:00 • committed by borisbstyle
parent 360ea84a14
commit 6d32aa5d7b
11 changed files with 502 additions and 12 deletions
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45
src/main/drivers/transponder_ir.h 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/>.
*/
#pragma once
#define TRANSPONDER_BITS_PER_BYTE 10 // start + 8 data + stop
#define TRANSPONDER_DATA_LENGTH 6
#define TRANSPONDER_TOGGLES_PER_BIT 11
#define TRANSPONDER_GAP_TOGGLES 1
#define TRANSPONDER_TOGGLES (TRANSPONDER_TOGGLES_PER_BIT + TRANSPONDER_GAP_TOGGLES)
#define TRANSPONDER_DMA_BUFFER_SIZE ((TRANSPONDER_TOGGLES_PER_BIT + 1) * TRANSPONDER_BITS_PER_BYTE * TRANSPONDER_DATA_LENGTH)
#define BIT_TOGGLE_1 78 // (156 / 2)
#define BIT_TOGGLE_0 0
void transponderIrInit(void);
void transponderIrHardwareInit(void);
void transponderIrDMAEnable(void);
void transponderIrWaitForTransmitComplete(void);
void transponderIrUpdateData(const uint8_t* transponderData);
void transponderIrTransmit(void);
bool isTransponderIrReady(void);
extern uint8_t transponderIrDMABuffer[TRANSPONDER_DMA_BUFFER_SIZE];
extern volatile uint8_t transponderIrDataTransferInProgress;