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Set UF2 boot value without SD #9618

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merged 1 commit into from
Sep 12, 2024
Merged

Set UF2 boot value without SD #9618

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11 changes: 8 additions & 3 deletions ports/nordic/common-hal/microcontroller/__init__.c
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@
#include "supervisor/shared/safe_mode.h"
#include "nrfx_glue.h"
#include "nrf_nvic.h"
#include "nrf_power.h"

// This routine should work even when interrupts are disabled. Used by OneWire
// for precise timing.
Expand Down Expand Up @@ -61,10 +62,14 @@ void common_hal_mcu_enable_interrupts() {

void common_hal_mcu_on_next_reset(mcu_runmode_t runmode) {
enum { DFU_MAGIC_UF2_RESET = 0x57 };
uint8_t new_value = 0;
if (runmode == RUNMODE_BOOTLOADER || runmode == RUNMODE_UF2) {
sd_power_gpregret_set(0, DFU_MAGIC_UF2_RESET);
} else {
sd_power_gpregret_set(0, 0);
new_value = DFU_MAGIC_UF2_RESET;
}
int err_code = sd_power_gpregret_set(0, DFU_MAGIC_UF2_RESET);
if (err_code != NRF_SUCCESS) {
// Set it without the soft device if the SD failed. (It may be off.)
nrf_power_gpregret_set(NRF_POWER, new_value);
}
if (runmode == RUNMODE_SAFE_MODE) {
safe_mode_on_next_reset(SAFE_MODE_PROGRAMMATIC);
Expand Down