void LEUART0_IRQHandler(void)
{
if (LEUART0->IF & LEUART_IF_RXDATAV)
{
uint8_t data = LEUART0->RXDATA;
buf_write_byte(leu_rx_buf, data);
if (leu_rx_buf->count == 0)
LEUART0->IEN &= ~ LEUART_IEN_RXDATAV; // disable rx interrupt
}
if (LEUART0->IF & LEUART_IF_TXBL)
{
uint8_t data;
if (buf_read_byte(leu_tx_buf, & data))
{
while (LEUART0->SYNCBUSY)
;
LEUART0->TXDATA = data;
}
else
LEUART0->IEN &= ~ LEUART_IEN_TXBL; // disable tx interrupt
}
// XXX do we need to explicitly clear interrupts?
//LEUART_IntClear(LEUART0, ???);
}
int buf_vunpack(Buf *self, char *fmt, va_list ap) {
char *s;
char *p;
uint8_t *u8p;
uint16_t *u16p;
uint32_t *u32p;
size_t len;
int res;
int bytes = 0;
for (p = fmt; *p != '\0'; p++) {
switch(*p) {
case 'b': /* char */
u8p = va_arg(ap, uint8_t*);
res = buf_read_byte(self, u8p);
break;
case 'h': /* short */
u16p = va_arg(ap, uint16_t*);
res = buf_read_short(self, u16p);
break;
case 'u': /* uint */
u32p = va_arg(ap, uint32_t*);
res = buf_read_uint(self, u32p);
break;
case 's': /* string */
s = va_arg(ap, char*);
len = va_arg(ap, size_t);
res = buf_read_string(self, s, len);
break;
default: /* illegal format */
res = -1;
}
if (res == -1) {
return -1;
}
bytes += res;
}
return bytes;
}
bool buf_read_char(buf_t *buf, char *c)
{
return buf_read_byte(buf, (uint8_t *) c);
}