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cardhopper fixes

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make usart write buffer const
sub out magic numbers with defines
fix edge case handling 255/256 byte frames (including crc)
add sanity checks to avoid buffer overrun on some "should never happen" edge cases
don't wait for rats reply from card before listening to next reader frame
cap fsci to 8 (256 bytes) as that's the most the proxmark3 codebase currently handles
eliminate 1k of ram usage by tweaking how emulation responses are sent
This commit is contained in:
nvx 2025-04-21 23:17:47 +10:00
commit 812c58f601
3 changed files with 43 additions and 27 deletions
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2
armsrc/usart.c
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@ -218,7 +218,7 @@ uint32_t usart_read_ng(uint8_t *data, size_t len) {
}
// transfer from device to client
int usart_writebuffer_sync(uint8_t *data, size_t len) {
int usart_writebuffer_sync(const uint8_t *data, size_t len) {
// Wait for current PDC bank to be free
// (and check next bank too, in case there will be a usart_writebuffer_async)