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added checksum for "GO" command in Espruino bootloader

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This commit is contained in:
Jean-Philippe Rey 2016-09-02 16:37:11 +02:00
parent 947621ddc6
commit 6f4265b211
1 changed files with 5 additions and 1 deletions
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6
targets/stm32_boot/main.c
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@ -156,8 +156,12 @@ int main(void) {
addr |= _getc_blocking() << 16;
addr |= _getc_blocking() << 8;
addr |= _getc_blocking();
chksumc = ((addr)&0xFF)^((addr>>8)&0xFF)^((addr>>16)&0xFF)^((addr>>24)&0xFF);
chksum = _getc_blocking();
// TODO: check checksum
if (chksumc != chksum) {
_putc(NACK);
break;
}
_putc(ACK);
setLEDs(7); // jumping...
unsigned int *ResetHandler = (unsigned int *)(addr + 4);