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added dma-ish handling

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This commit is contained in:
Jelmer
2023-03-27 17:24:48 +02:00
parent d92681ef02
commit 2cdb2b8a6f
3 changed files with 12 additions and 43 deletions
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20
zbs243_shared/soc/zbs243/uart.c
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@@ -28,7 +28,6 @@ void uartTx(uint8_t val) {
UARTBUF = val;
}
#else
extern uint8_t __xdata blockbuffer[];
volatile uint8_t txtail = 0;
volatile uint8_t txhead = 0;
@@ -63,32 +62,15 @@ uint8_t uartBytesAvail() {
}
uint8_t* __idata blockp;
uint8_t __idata cmd[3];
volatile bool __idata serialBypassActive = false;
void checkcommand(uint8_t rx) {
for (uint8_t c = 0; c < 2; c++) {
cmd[c] = cmd[c + 1];
}
cmd[2] = rx;
if (strncmp(cmd, ">D>", 3) == 0) {
blockp = blockbuffer;
serialBypassActive = true;
}
}
void UART_IRQ1(void) __interrupt(0) {
if (UARTSTA & 1) { // RXC
UARTSTA &= 0xfe;
if (serialBypassActive) {
if (P0_2) {
*blockp++ = UARTBUF;
if (blockp == (blockbuffer + 4100)) {
serialBypassActive = false;
}
} else {
rxbuf[rxhead] = UARTBUF;
rxhead++;
checkcommand(UARTBUF);
}
}
if (UARTSTA & 2) { // TXC