mirror of https://github.com/ArduPilot/ardupilot
114 lines
2.6 KiB
C++
114 lines
2.6 KiB
C++
/// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
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#include <AP_HAL/AP_HAL.h>
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#if CONFIG_HAL_BOARD == HAL_BOARD_QURT
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#include "RCOutput.h"
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#include <GCS_MAVLink/include/mavlink/v1.0/checksum.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <dev_fs_lib_serial.h>
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extern const AP_HAL::HAL& hal;
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using namespace QURT;
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void RCOutput::init()
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{
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}
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void RCOutput::set_freq(uint32_t chmask, uint16_t freq_hz)
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{
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// no support for changing frequency yet
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}
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uint16_t RCOutput::get_freq(uint8_t ch)
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{
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// return fixed fake value
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return 490;
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}
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void RCOutput::enable_ch(uint8_t ch)
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{
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if (ch >= channel_count) {
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return;
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}
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enable_mask |= 1U<<ch;
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}
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void RCOutput::disable_ch(uint8_t ch)
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{
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if (ch >= channel_count) {
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return;
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}
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enable_mask &= ~1U<<ch;
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}
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void RCOutput::write(uint8_t ch, uint16_t period_us)
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{
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if (ch >= channel_count) {
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return;
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}
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period[ch] = period_us;
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need_write = true;
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}
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uint16_t RCOutput::read(uint8_t ch)
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{
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if (ch >= channel_count) {
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return 0;
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}
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return period[ch];
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}
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void RCOutput::read(uint16_t *period_us, uint8_t len)
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{
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for (int i = 0; i < len; i++) {
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period_us[i] = read(i);
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}
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}
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extern "C" {
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// discard incoming data
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static void read_callback_trampoline(void *, char *, size_t ) {}
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}
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void RCOutput::timer_update(void)
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{
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if (fd == -1 && device_path != nullptr) {
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HAP_PRINTF("Opening RCOutput %s", device_path);
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fd = open(device_path, O_RDWR|O_NONBLOCK);
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if (fd == -1) {
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AP_HAL::panic("Unable to open %s", device_path);
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}
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HAP_PRINTF("Opened ESC UART %s fd=%d\n", device_path, fd);
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if (fd != -1) {
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struct dspal_serial_ioctl_data_rate rate;
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rate.bit_rate = DSPAL_SIO_BITRATE_115200;
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ioctl(fd, SERIAL_IOCTL_SET_DATA_RATE, (void *)&rate);
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struct dspal_serial_ioctl_receive_data_callback callback;
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callback.context = this;
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callback.rx_data_callback_func_ptr = read_callback_trampoline;
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ioctl(fd, SERIAL_IOCTL_SET_RECEIVE_DATA_CALLBACK, (void *)&callback);
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}
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}
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if (!need_write || fd == -1) {
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return;
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}
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struct PACKED {
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uint8_t magic = 0xF7;
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uint16_t period[channel_count];
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uint16_t crc;
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} frame;
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memcpy(frame.period, period, sizeof(period));
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frame.crc = crc_calculate((uint8_t*)frame.period, channel_count*2);
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need_write = false;
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::write(fd, (uint8_t *)&frame, sizeof(frame));
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}
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#endif // CONFIG_HAL_BOARD_SUBTYPE
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