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#include <stdio.h>
#include <string.h>
#include <peripheral_clk_config.h>
#include "watch.h"
#include "spiflash.h"
// this is a very basic app to confirm that SPI is working, tested with board OSO-MISC-21-017 and a GD25Q16C Flash chip.
static bool wait_for_flash_ready(void) {
watch_set_pin_level(A3, false);
bool ok = true;
uint8_t read_status_response[1] = {0x00};
do {
ok = spi_flash_read_command(CMD_READ_STATUS, read_status_response, 1);
} while (ok && (read_status_response[0] & 0x3) != 0);
watch_set_pin_level(A3, true);
return ok;
}
void app_init(void) {
spi_flash_init();
delay_ms(5000);
}
void app_wake_from_backup(void) {
}
void app_setup(void) {
}
void app_prepare_for_standby(void) {
}
void app_wake_from_standby(void) {
}
bool app_loop(void) {
uint8_t buf[3] = {0};
printf("loop\n");
wait_for_flash_ready();
watch_set_pin_level(A3, false);
spi_flash_read_command(CMD_READ_JEDEC_ID, buf, 3);
printf("ident: %x, %x, %x\n", buf[0], buf[1], buf[2]);
watch_set_pin_level(A3, true);
wait_for_flash_ready();
delay_ms(10000);
return false;
}
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