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atmel-samd: Reset all SERCOMs except the SPI flash one if used. #29

This commit is contained in:
Scott Shawcroft 2016-11-01 11:03:12 -07:00
parent 19e5f1fef2
commit 674f3d46e8
1 changed files with 16 additions and 0 deletions
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16
atmel-samd/main.c
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@ -200,6 +200,21 @@ void reset_mp() {
pin_init0();
}
void reset_samd21() {
// Reset all SERCOMs except the one being used by the SPI flash.
Sercom *sercom_instances[SERCOM_INST_NUM] = SERCOM_INSTS;
for (int i = 0; i < SERCOM_INST_NUM; i++) {
#ifdef SPI_FLASH_SERCOM
if (sercom_instances[i] == SPI_FLASH_SERCOM) {
continue;
}
#endif
sercom_instances[i]->SPI.CTRLA.bit.SWRST = 1;
}
// TODO(tannewt): Reset all of the pins too.
}
void start_mp() {
#ifdef AUTORESET_DELAY_MS
mp_hal_stdout_tx_str("\r\n");
@ -259,6 +274,7 @@ int main(int argc, char **argv) {
}
if (exit_code == PYEXEC_FORCED_EXIT) {
mp_hal_stdout_tx_str("soft reboot\r\n");
reset_samd21();
reset_mp();
start_mp();
} else if (exit_code != 0) {