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ec1d29f4ae
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39f30aeec6
@ -55,7 +55,6 @@ void common_hal_mcu_enable_interrupts(void) {
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}
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extern uint32_t _ezero;
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extern uint32_t _srelocate;
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void common_hal_mcu_on_next_reset(mcu_runmode_t runmode) {
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// Set up the defaults.
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@ -63,7 +62,7 @@ void common_hal_mcu_on_next_reset(mcu_runmode_t runmode) {
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_ezero = CIRCUITPY_CANARY_WORD;
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if (runmode == RUNMODE_BOOTLOADER) {
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if (&_bootloader_dbl_tap < &_srelocate) {
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if (!bootloader_available()) {
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mp_raise_ValueError("Cannot reset into bootloader because no bootloader is present.");
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}
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// Pretend to be the first of the two reset presses needed to enter the
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@ -62,7 +62,7 @@ volatile bool reset_on_disconnect = false;
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void usb_dtr_notify(uint8_t port, bool set) {
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mp_cdc_enabled = set;
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if (!set && reset_on_disconnect && _bootloader_dbl_tap != 0) {
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if (!set && reset_on_disconnect && bootloader_available()) {
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reset_to_bootloader();
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}
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}
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@ -38,3 +38,8 @@ void reset_to_bootloader(void) {
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_bootloader_dbl_tap = DBL_TAP_MAGIC;
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reset();
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}
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extern uint32_t _srelocate;
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bool bootloader_available(void) {
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return &_bootloader_dbl_tap >= &_srelocate;
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}
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@ -33,5 +33,6 @@ extern uint32_t _bootloader_dbl_tap;
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void reset_to_bootloader(void);
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void reset(void);
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bool bootloader_available(void);
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#endif // MICROPY_INCLUDED_ATMEL_SAMD_RESET_H
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