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Improve help text for bit-banged ISP/TPI programmers

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MCUdude
2025-04-22 23:39:51 +02:00
parent 118625e18b
commit 8626f4058a
1 changed files with 6 additions and 1 deletions
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7
src/main.c
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@@ -256,7 +256,8 @@ static void usage(void) {
" e.g., -c 'ur*'/s for programmer info/definition\n"
" -A Disable trailing-0xff removal for file/AVR read\n"
" -D, --noerase Disable auto-erase for flash memory; implies -A\n"
" -i <delay> ISP Clock Delay [in microseconds]\n"
" -i <delay> Bit state change delay [in microseconds] for\n"
" bit-banged ISP and TPI programmers\n"
" -P, --port <port> Connection; -P ?s or -P ?sa lists serial ones\n"
" -r, --reconnect Reconnect to -P port after \"touching\" it; wait\n"
" 400 ms for each -r; needed for some USB boards\n"
@@ -1636,6 +1637,10 @@ int main(int argc, char *argv[]) {
if(str_eq(pgm->type, "serialupdi") || str_eq(pgm->type, "SERBB"))
imsg_error(" - use -b to set lower baud rate, e.g. -b %d\n", baudrate? baudrate/2: 57600);
else if(str_eq(pgm->type, "linuxgpio") || str_eq(pgm->type, "buspirate_bb") || str_eq(pgm->type, "serbb")) {
imsg_error(" - use -i %s to set a longer delay (in microseconds) between each bit state chage, e.g. -i 32\n",
bitclock? "instead of -B": "");
}
else
imsg_error(" - use -B to set lower the bit clock frequency, e.g. -B 125kHz\n");