diff options
| -rw-r--r-- | ports/samd/boards/SPARKFUN_SAMD51_THING_PLUS/mpconfigboard.h | 6 | ||||
| -rw-r--r-- | ports/samd/modmachine.c | 14 |
2 files changed, 17 insertions, 3 deletions
diff --git a/ports/samd/boards/SPARKFUN_SAMD51_THING_PLUS/mpconfigboard.h b/ports/samd/boards/SPARKFUN_SAMD51_THING_PLUS/mpconfigboard.h index e797ccca9..a51b71c36 100644 --- a/ports/samd/boards/SPARKFUN_SAMD51_THING_PLUS/mpconfigboard.h +++ b/ports/samd/boards/SPARKFUN_SAMD51_THING_PLUS/mpconfigboard.h @@ -2,3 +2,9 @@ #define MICROPY_HW_MCU_NAME "SAMD51J20A" #define MICROPY_HW_XOSC32K (1) + +// There seems to be an inconsistency in the SAMD51 Thing bootloader in that +// the bootloader magic address is at the end of a 192k RAM area, instead of +// 256k. Since the SAMD51x20A has 256k RAM, the loader symbol is at that address +// and so there is a fix here using the previous definition. +#define DBL_TAP_ADDR_ALT ((volatile uint32_t *)(HSRAM_ADDR + HSRAM_SIZE - 0x10000 - 4)) diff --git a/ports/samd/modmachine.c b/ports/samd/modmachine.c index 2a8e34a96..ce5fef76f 100644 --- a/ports/samd/modmachine.c +++ b/ports/samd/modmachine.c @@ -41,21 +41,26 @@ #include "hpl_pm_base.h" #if MICROPY_PY_MACHINE - #if defined(MCU_SAMD21) -#define DBL_TAP_ADDR ((volatile uint32_t *)(0x20000000 + 32 * 1024 - 4)) +#define DBL_TAP_ADDR ((volatile uint32_t *)(HMCRAMC0_ADDR + HMCRAMC0_SIZE - 4)) #elif defined(MCU_SAMD51) -#define DBL_TAP_ADDR ((volatile uint32_t *)(0x20000000 + 192 * 1024 - 4)) +#define DBL_TAP_ADDR ((volatile uint32_t *)(HSRAM_ADDR + HSRAM_SIZE - 4)) #endif +// A board may define a DPL_TAP_ADDR_ALT, which will be set as well +// Needed at the moment for Sparkfun SAMD51 Thing Plus #define DBL_TAP_MAGIC_LOADER 0xf01669ef #define DBL_TAP_MAGIC_RESET 0xf02669ef #define LIGHTSLEEP_CPU_FREQ 200000 extern bool EIC_occured; +extern uint32_t _dbl_tap_addr; STATIC mp_obj_t machine_reset(void) { *DBL_TAP_ADDR = DBL_TAP_MAGIC_RESET; + #ifdef DBL_TAP_ADDR_ALT + *DBL_TAP_ADDR_ALT = DBL_TAP_MAGIC_RESET; + #endif NVIC_SystemReset(); return mp_const_none; } @@ -63,6 +68,9 @@ MP_DEFINE_CONST_FUN_OBJ_0(machine_reset_obj, machine_reset); STATIC mp_obj_t machine_bootloader(void) { *DBL_TAP_ADDR = DBL_TAP_MAGIC_LOADER; + #ifdef DBL_TAP_ADDR_ALT + *DBL_TAP_ADDR_ALT = DBL_TAP_MAGIC_LOADER; + #endif NVIC_SystemReset(); return mp_const_none; } |