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Update nuke.c to auto-detect flash size #653

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Update nuke.c to auto-detect flash size #653

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11 changes: 5 additions & 6 deletions flash/nuke/nuke.c
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Original file line number Diff line number Diff line change
Expand Up @@ -27,12 +27,11 @@

int main() {
uint flash_size_bytes;
#ifndef PICO_FLASH_SIZE_BYTES
#warning PICO_FLASH_SIZE_BYTES not set, assuming 16M
flash_size_bytes = 16 * 1024 * 1024;
#else
flash_size_bytes = PICO_FLASH_SIZE_BYTES;
#endif
uint8_t txbuf[4];
uint8_t rxbuf[4];
txbuf[0] = 0x9f;
flash_do_cmd(txbuf, rxbuf, 4);
flash_size_bytes = 1u << rxbuf[3];
flash_range_erase(0, flash_size_bytes);
// Leave an eyecatcher pattern in the first page of flash so picotool can
// more easily check the size:
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