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fw: Minimal CDC implementation of new framing protocol

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Throwing away mode and length from incoming data. Adding mode and
length to outgoing data.

Splitting responses into frames small enough for the USB<->UART
transceiver to handle.
This commit is contained in:
Mikael Ågren 2024-09-16 14:26:12 +02:00
parent 1b9bbc4eba
commit a0c031eb25
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GPG key ID: E02DA3D397792C46
3 changed files with 60 additions and 13 deletions
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9
hw/application_fpga/fw/tk1/main.c
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@ -420,6 +420,9 @@ int main(void)
/*@+mustfreeonly@*/
ctx.use_uss = FALSE;
uint8_t mode = 0;
uint8_t mode_bytes_left = 0;
scramble_ram();
#if defined(SIMULATION)
@ -429,7 +432,8 @@ int main(void)
for (;;) {
switch (state) {
case FW_STATE_INITIAL:
if (readcommand(&hdr, cmd, state) == -1) {
if (readcommand(&hdr, cmd, state, &mode,
&mode_bytes_left) == -1) {
state = FW_STATE_FAIL;
break;
}
@ -438,7 +442,8 @@ int main(void)
break;
case FW_STATE_LOADING:
if (readcommand(&hdr, cmd, state) == -1) {
if (readcommand(&hdr, cmd, state, &mode,
&mode_bytes_left) == -1) {
state = FW_STATE_FAIL;
break;
}