STATIC void UARTGenericIntHandler(uint32_t uart_id) {
pyb_uart_obj_t *self;
uint32_t status;
if ((self = pyb_uart_find(uart_id))) {
status = MAP_UARTIntStatus(self->reg, true);
// receive interrupt
if (status & (UART_INT_RX | UART_INT_RT)) {
MAP_UARTIntClear(self->reg, UART_INT_RX | UART_INT_RT);
while (UARTCharsAvail(self->reg)) {
int data = MAP_UARTCharGetNonBlocking(self->reg);
if (MICROPY_STDIO_UART == self->uart_id && data == user_interrupt_char) {
// raise exception when interrupts are finished
mpexception_keyboard_nlr_jump();
}
else if (self->read_buf_len != 0) {
uint16_t next_head = (self->read_buf_head + 1) % self->read_buf_len;
if (next_head != self->read_buf_tail) {
// only store data if room in buf
self->read_buf[self->read_buf_head] = data;
self->read_buf_head = next_head;
}
}
}
}
}
}
static void telnet_parse_input (uint8_t *str, int16_t *len) {
int16_t b_len = *len;
uint8_t *b_str = str;
for (uint8_t *_str = b_str; _str < b_str + b_len; ) {
if (*_str <= 127) {
if (telnet_data.state == E_TELNET_STE_LOGGED_IN && *_str == user_interrupt_char) {
// raise a keyboard exception
mpexception_keyboard_nlr_jump();
(*len)--;
_str++;
}
else if (*_str > 0) {
*str++ = *_str++;
}
else {
_str++;
*len -= 1;
}
}
else {
// in case we have received an incomplete telnet option, unlikely, but possible
_str += MIN(3, *len);
*len -= MIN(3, *len);
}
}
}
static void telnet_parse_input (uint8_t *str, int16_t *len) {
int16_t b_len = *len;
uint8_t *b_str = str;
for (uint8_t *_str = b_str; _str < b_str + b_len; ) {
if (*_str <= 127) {
if (telnet_data.state == E_TELNET_STE_LOGGED_IN && *_str == user_interrupt_char) {
// raise a keyboard exception
mpexception_keyboard_nlr_jump();
(*len)--;
_str++;
}
else {
*str++ = *_str++;
}
}
else {
_str += 3;
*len -= 3;
}
}
}
