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/**
* @file main.cpp
* @brief Program entry point.
*
* Copyright (C) 2020 Clyne Sullivan
*
* Distributed under the GNU GPL v3 or later. You should have received a copy of
* the GNU General Public License along with this program.
* If not, see <https://www.gnu.org/licenses/>.
*/
#include "ch.h"
#include "hal.h"
#include "adc.hpp"
#include "dac.hpp"
#include "usbserial.hpp"
#include <array>
#if CACHE_LINE_SIZE > 0
CC_ALIGN(CACHE_LINE_SIZE)
#endif
static std::array<adcsample_t, CACHE_SIZE_ALIGN(adcsample_t, 100)> adc_samples;
int main()
{
halInit();
chSysInit();
palSetPadMode(GPIOA, 5, PAL_MODE_OUTPUT_PUSHPULL); // LED
ADCd adc (ADCD1, GPTD4);
adc.start();
//DACd dac (DACD1, {
// .init = 0,
// .datamode = DAC_DHRM_12BIT_RIGHT,
// .cr = 0
//});
//dac.start();
//dac.write(0, 1024);
USBSeriald usbd (SDU1);
usbd.start();
while (true) {
if (usbd.active()) {
// Expect to receive a byte command 'packet'.
if (char cmd; usbd.read(&cmd) > 0) {
switch (cmd) {
case 'r': // Read in analog signal
adc.getSamples(&adc_samples[0], adc_samples.size());
usbd.write(adc_samples.data(), adc_samples.size());
break;
case 'i': // Identify ourself as an stmdsp device
usbd.write("stmdsp", 6);
break;
default:
break;
}
}
}
chThdSleepMilliseconds(250);
}
}
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