mirror of
https://github.com/eried/portapack-mayhem.git
synced 2024-10-01 01:26:06 -04:00
248 lines
7.3 KiB
C
Executable File
248 lines
7.3 KiB
C
Executable File
/*
|
|
ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
#include "ch.h"
|
|
#include "hal.h"
|
|
#include "test.h"
|
|
|
|
static void pwmpcb(PWMDriver *pwmp);
|
|
static void adccb(ADCDriver *adcp, adcsample_t *buffer, size_t n);
|
|
static void spicb(SPIDriver *spip);
|
|
|
|
/* Total number of channels to be sampled by a single ADC operation.*/
|
|
#define ADC_GRP1_NUM_CHANNELS 2
|
|
|
|
/* Depth of the conversion buffer, channels are sampled four times each.*/
|
|
#define ADC_GRP1_BUF_DEPTH 4
|
|
|
|
/*
|
|
* ADC samples buffer.
|
|
*/
|
|
static adcsample_t samples[ADC_GRP1_NUM_CHANNELS * ADC_GRP1_BUF_DEPTH];
|
|
|
|
/*
|
|
* ADC conversion group.
|
|
* Mode: Linear buffer, 4 samples of 2 channels, SW triggered.
|
|
* Channels: IN10 (48 cycles sample time)
|
|
* Sensor (192 cycles sample time)
|
|
*/
|
|
static const ADCConversionGroup adcgrpcfg = {
|
|
FALSE,
|
|
ADC_GRP1_NUM_CHANNELS,
|
|
adccb,
|
|
NULL,
|
|
/* HW dependent part.*/
|
|
0, /* CR1 */
|
|
ADC_CR2_SWSTART, /* CR2 */
|
|
0,
|
|
ADC_SMPR2_SMP_AN10(ADC_SAMPLE_48) | ADC_SMPR2_SMP_SENSOR(ADC_SAMPLE_192),
|
|
0,
|
|
ADC_SQR1_NUM_CH(ADC_GRP1_NUM_CHANNELS),
|
|
0,
|
|
0,
|
|
0,
|
|
ADC_SQR5_SQ2_N(ADC_CHANNEL_IN10) | ADC_SQR5_SQ1_N(ADC_CHANNEL_SENSOR)
|
|
};
|
|
|
|
/*
|
|
* PWM configuration structure.
|
|
* Cyclic callback enabled, channels 1 and 2 enabled without callbacks,
|
|
* the active state is a logic one.
|
|
*/
|
|
static PWMConfig pwmcfg = {
|
|
10000, /* 10kHz PWM clock frequency. */
|
|
10000, /* PWM period 1S (in ticks). */
|
|
pwmpcb,
|
|
{
|
|
{PWM_OUTPUT_ACTIVE_HIGH, NULL},
|
|
{PWM_OUTPUT_ACTIVE_HIGH, NULL},
|
|
{PWM_OUTPUT_DISABLED, NULL},
|
|
{PWM_OUTPUT_DISABLED, NULL}
|
|
},
|
|
/* HW dependent part.*/
|
|
0,
|
|
0
|
|
};
|
|
|
|
/*
|
|
* SPI configuration structure.
|
|
* Maximum speed (12MHz), CPHA=0, CPOL=0, 16bits frames, MSb transmitted first.
|
|
* The slave select line is the pin GPIOA_SPI1NSS on the port GPIOA.
|
|
*/
|
|
static const SPIConfig spicfg = {
|
|
spicb,
|
|
/* HW dependent part.*/
|
|
GPIOB,
|
|
12,
|
|
SPI_CR1_DFF
|
|
};
|
|
|
|
/*
|
|
* PWM cyclic callback.
|
|
* A new ADC conversion is started.
|
|
*/
|
|
static void pwmpcb(PWMDriver *pwmp) {
|
|
|
|
(void)pwmp;
|
|
|
|
/* Starts an asynchronous ADC conversion operation, the conversion
|
|
will be executed in parallel to the current PWM cycle and will
|
|
terminate before the next PWM cycle.*/
|
|
chSysLockFromIsr();
|
|
adcStartConversionI(&ADCD1, &adcgrpcfg, samples, ADC_GRP1_BUF_DEPTH);
|
|
chSysUnlockFromIsr();
|
|
}
|
|
|
|
/*
|
|
* ADC end conversion callback.
|
|
* The PWM channels are reprogrammed using the latest ADC samples.
|
|
* The latest samples are transmitted into a single SPI transaction.
|
|
*/
|
|
void adccb(ADCDriver *adcp, adcsample_t *buffer, size_t n) {
|
|
|
|
(void) buffer; (void) n;
|
|
/* Note, only in the ADC_COMPLETE state because the ADC driver fires an
|
|
intermediate callback when the buffer is half full.*/
|
|
if (adcp->state == ADC_COMPLETE) {
|
|
adcsample_t avg_ch1, avg_ch2;
|
|
|
|
/* Calculates the average values from the ADC samples.*/
|
|
avg_ch1 = (samples[0] + samples[2] + samples[4] + samples[6]) / 4;
|
|
avg_ch2 = (samples[1] + samples[3] + samples[5] + samples[7]) / 4;
|
|
|
|
chSysLockFromIsr();
|
|
|
|
/* Changes the channels pulse width, the change will be effective
|
|
starting from the next cycle.*/
|
|
pwmEnableChannelI(&PWMD4, 0, PWM_FRACTION_TO_WIDTH(&PWMD4, 4096, avg_ch1));
|
|
pwmEnableChannelI(&PWMD4, 1, PWM_FRACTION_TO_WIDTH(&PWMD4, 4096, avg_ch2));
|
|
|
|
/* SPI slave selection and transmission start.*/
|
|
spiSelectI(&SPID2);
|
|
spiStartSendI(&SPID2, ADC_GRP1_NUM_CHANNELS * ADC_GRP1_BUF_DEPTH, samples);
|
|
|
|
chSysUnlockFromIsr();
|
|
}
|
|
}
|
|
|
|
/*
|
|
* SPI end transfer callback.
|
|
*/
|
|
static void spicb(SPIDriver *spip) {
|
|
|
|
/* On transfer end just releases the slave select line.*/
|
|
chSysLockFromIsr();
|
|
spiUnselectI(spip);
|
|
chSysUnlockFromIsr();
|
|
}
|
|
|
|
/*
|
|
* This is a periodic thread that does absolutely nothing except increasing
|
|
* a seconds counter.
|
|
*/
|
|
static WORKING_AREA(waThread1, 128);
|
|
static msg_t Thread1(void *arg) {
|
|
static uint32_t seconds_counter;
|
|
|
|
(void)arg;
|
|
chRegSetThreadName("counter");
|
|
while (TRUE) {
|
|
chThdSleepMilliseconds(1000);
|
|
seconds_counter++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Application entry point.
|
|
*/
|
|
int main(void) {
|
|
|
|
/*
|
|
* System initializations.
|
|
* - HAL initialization, this also initializes the configured device drivers
|
|
* and performs the board-specific initializations.
|
|
* - Kernel initialization, the main() function becomes a thread and the
|
|
* RTOS is active.
|
|
*/
|
|
halInit();
|
|
chSysInit();
|
|
|
|
/*
|
|
* Activates the serial driver 1 using the driver default configuration.
|
|
* PA9 and PA10 are routed to USART1.
|
|
*/
|
|
sdStart(&SD1, NULL);
|
|
palSetPadMode(GPIOA, 9, PAL_MODE_ALTERNATE(7));
|
|
palSetPadMode(GPIOA, 10, PAL_MODE_ALTERNATE(7));
|
|
|
|
/*
|
|
* If the user button is pressed after the reset then the test suite is
|
|
* executed immediately before activating the various device drivers in
|
|
* order to not alter the benchmark scores.
|
|
*/
|
|
if (palReadPad(GPIOA, GPIOA_BUTTON))
|
|
TestThread(&SD1);
|
|
|
|
/*
|
|
* Initializes the SPI driver 2. The SPI2 signals are routed as follow:
|
|
* PB12 - NSS.
|
|
* PB13 - SCK.
|
|
* PB14 - MISO.
|
|
* PB15 - MOSI.
|
|
*/
|
|
spiStart(&SPID2, &spicfg);
|
|
palSetPad(GPIOB, 12);
|
|
palSetPadMode(GPIOB, 12, PAL_MODE_OUTPUT_PUSHPULL |
|
|
PAL_STM32_OSPEED_HIGHEST); /* NSS. */
|
|
palSetPadMode(GPIOB, 13, PAL_MODE_ALTERNATE(5) |
|
|
PAL_STM32_OSPEED_HIGHEST); /* SCK. */
|
|
palSetPadMode(GPIOB, 14, PAL_MODE_ALTERNATE(5)); /* MISO. */
|
|
palSetPadMode(GPIOB, 15, PAL_MODE_ALTERNATE(5) |
|
|
PAL_STM32_OSPEED_HIGHEST); /* MOSI. */
|
|
|
|
/*
|
|
* Initializes the ADC driver 1 and enable the thermal sensor.
|
|
* The pin PC0 on the port GPIOC is programmed as analog input.
|
|
*/
|
|
adcStart(&ADCD1, NULL);
|
|
adcSTM32EnableTSVREFE();
|
|
palSetPadMode(GPIOC, 0, PAL_MODE_INPUT_ANALOG);
|
|
|
|
/*
|
|
* Initializes the PWM driver 4, routes the TIM4 outputs to the board LEDs.
|
|
*/
|
|
pwmStart(&PWMD4, &pwmcfg);
|
|
palSetPadMode(GPIOB, GPIOB_LED4, PAL_MODE_ALTERNATE(2));
|
|
palSetPadMode(GPIOB, GPIOB_LED3, PAL_MODE_ALTERNATE(2));
|
|
|
|
/*
|
|
* Creates the example thread.
|
|
*/
|
|
chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
|
|
|
|
/*
|
|
* Normal main() thread activity, in this demo it does nothing except
|
|
* sleeping in a loop and check the button state, when the button is
|
|
* pressed the test procedure is launched with output on the serial
|
|
* driver 1.
|
|
*/
|
|
while (TRUE) {
|
|
if (palReadPad(GPIOA, GPIOA_BUTTON))
|
|
TestThread(&SD1);
|
|
chThdSleepMilliseconds(500);
|
|
}
|
|
}
|