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#include <stdint.h>
#include <string.h>
#include "ch.h"
#include "hal.h"
#include "chprintf.h"
#include "shell.h"
#include "ch_test.h"
#define LED_EXT 14
bool watchdog_started = false;
void watchdog_callback(void) {
palTogglePad(IOPORT1, LED2);
palTogglePad(IOPORT1, LED3);
palTogglePad(IOPORT1, LED4);
}
WDGConfig WDG_config = {
.pause_on_sleep = 0,
.pause_on_halt = 0,
.timeout_ms = 5000,
.callback = watchdog_callback,
};
void gpt_callback(GPTDriver *gptp) {
palTogglePad(IOPORT1, LED2);
}
/*
* GPT configuration
* Frequency: 31250Hz (32us period)
* Resolution: 16 bits
*/
static const GPTConfig gpt_config = {
.frequency = 31250,
.callback = gpt_callback,
.resolution = 16,
};
/*
* Command Random
*/
#define RANDOM_BUFFER_SIZE 1024
static uint8_t random_buffer[RANDOM_BUFFER_SIZE];
static void cmd_random(BaseSequentialStream *chp, int argc, char *argv[]) {
uint16_t size = 16;
uint16_t i = 0;
uint8_t nl = 0;
if (argc > 0) {
size = atoi(argv[0]);
}
if (size > RANDOM_BUFFER_SIZE) {
chprintf(chp, "random: maximum size is %d.\r\n", RANDOM_BUFFER_SIZE);
return;
}
chprintf(chp, "Fetching %d random byte(s):\r\n", size);
rngStart(&RNGD1, NULL);
rngWrite(&RNGD1, random_buffer, size, TIME_INFINITE);
rngStop(&RNGD1);
for (i = 0 ; i < size ; i++) {
chprintf(chp, "%02x ", random_buffer[i]);
if ((nl = (((i+1) % 20)) == 0))
chprintf(chp, "\r\n");
}
if (!nl)
chprintf(chp, "\r\n");
}
static void cmd_watchdog(BaseSequentialStream *chp, int argc, char *argv[]) {
if ((argc != 2) || (strcmp(argv[0], "start"))) {
usage:
chprintf(chp, "Usage: watchdog start <timeout>\r\n"
" <timeout> = 0..%d seconds\r\n",
WDG_MAX_TIMEOUT_MS/1000);
return;
}
int timeout = atoi(argv[1]);
if ((timeout < 0) || (timeout > (WDG_MAX_TIMEOUT_MS/1000)))
goto usage;
if (watchdog_started) {
chprintf(chp, "Watchdog already started."
" Can't be modified once activated.\r\n");
return;
}
chprintf(chp,
"Watchdog started\r\n"
"You need to push BTN1 every %d second(s)\r\n", timeout);
WDG_config.timeout_ms = timeout * 1000;
wdgStart(&WDGD1, &WDG_config);
watchdog_started = true;
}
static void cmd_info(BaseSequentialStream *chp, int argc, char *argv[]) {
chprintf(chp, "Watchdog max = %d ms\r\n", WDG_MAX_TIMEOUT_MS);
}
static THD_WORKING_AREA(shell_wa, 1024);
static const ShellCommand commands[] = {
{"info", cmd_info },
{"random", cmd_random },
{"watchdog", cmd_watchdog },
{NULL, NULL}
};
static const ShellConfig shell_cfg1 = {
(BaseSequentialStream *)&SD1,
commands
};
static SerialConfig serial_config = {
.speed = 115200,
.tx_pad = UART_TX,
.rx_pad = UART_RX,
#if NRF5_SERIAL_USE_HWFLOWCTRL == TRUE
.rts_pad = UART_RTS,
.cts_pad = UART_CTS,
#endif
};
static THD_WORKING_AREA(waThread1, 64);
static THD_FUNCTION(Thread1, arg) {
(void)arg;
uint8_t led = LED4;
chRegSetThreadName("blinker");
while (1) {
palTogglePad(IOPORT1, led);
chThdSleepMilliseconds(100);
}
}
#define printf(fmt, ...) \
chprintf((BaseSequentialStream*)&SD1, fmt, ##__VA_ARGS__)
/**@brief Function for application main entry.
*/
int main(void)
{
halInit();
chSysInit();
shellInit();
sdStart(&SD1, &serial_config);
palSetPad(IOPORT1, LED1);
palClearPad(IOPORT1, LED2);
palClearPad(IOPORT1, LED3);
palSetPad(IOPORT1, LED4);
gptStart(&GPTD1, &gpt_config);
gptStartContinuous(&GPTD1, 31250);
chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO+1,
Thread1, NULL);
chThdCreateStatic(shell_wa, sizeof(shell_wa), NORMALPRIO+1,
shellThread, (void *)&shell_cfg1);
printf(PORT_INFO "\r\n");
chThdSleep(2);
printf("Priority levels %d\r\n", CORTEX_PRIORITY_LEVELS);
//test_execute((BaseSequentialStream *)&SD1);
NRF_P0->DETECTMODE = 0;
while (true) {
if (watchdog_started &&
(palReadPad(IOPORT1, BTN1) == 0)) {
palTogglePad(IOPORT1, LED1);
wdgReset(&WDGD1);
printf("Watchdog reseted\r\n");
}
chThdSleepMilliseconds(250);
}
}
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