I need to use UART0 and UART1 read_irq.
I reference Intel example code but that use the qm_uart_irq_read_terminate(STDOUT_UART) function.I want UART FIFO no empty than trigger interrput.
I also reference and try this,but It can't use.
Please help thanks~
code:
# define ERR_STR ("Error: Transmission incomplete.\n")
static qm_uart_transfer_t async_xfer_desc;
int main(void)
{
qm_uart_status_t uart_status __attribute__((unused)) = 0;
int ret __attribute__((unused));
/* Mux out STDOUT_UART tx/rx pins and enable input for rx. */
qm_pmux_select(QM_PIN_ID_18, QM_PMUX_FN_0);
qm_pmux_select(QM_PIN_ID_19, QM_PMUX_FN_0);
qm_pmux_input_en(QM_PIN_ID_18, true);
qm_pmux_select(QM_PIN_ID_16, QM_PMUX_FN_2);
qm_pmux_select(QM_PIN_ID_17, QM_PMUX_FN_2);
qm_pmux_input_en(QM_PIN_ID_17, true);
clk_periph_enable(CLK_PERIPH_CLK | CLK_PERIPH_UARTB_REGISTER);
stdout_uart_setup(QM_UART_CFG_BAUD_DL_PACK(0, 17, 6));
//IRQ
// Register the UART interrupts.
qm_irq_request(QM_IRQ_UART_1, qm_uart_1_isr);
// Used on both TX and RX
//async_xfer_desc.callback_data = (void *)&xfer_irq_data;
/* IRQ based TX. */
async_xfer_desc.data = (uint8_t *)tx_buffer;
async_xfer_desc.data_len = sizeof(tx_buffer);
async_xfer_desc.callback = uart_example_tx_callback;
ret = qm_uart_irq_write(QM_UART_1, &async_xfer_desc);
QM_ASSERT(0 == ret);
clk_sys_udelay(1000);
// IRQ based RX.
rx_callback_invoked = false;
async_xfer_desc.data = (uint8_t *)rx_buffer;
async_xfer_desc.data_len = BIG_NUMBER_RX;
async_xfer_desc.callback = uart_example_rx_callback;
ret = qm_uart_irq_read(QM_UART_1, &async_xfer_desc);
//QM_ASSERT(0 == ret);
while(1)
{
}
QM_PUTS("Finished: AON GPIO\n");
return 0;
}
void uart_example_rx_callback(void *data, int error, qm_uart_status_t status, uint32_t len)
{
if (!error || error == -ECANCELED) {
/* Transfer successful or RX terminated. */
qm_uart_write_buffer(QM_UART_1, &rx_buffer[1], len-1);
rx_callback_invoked = true;
}
else {
qm_uart_write_buffer(QM_UART_1, (uint8_t *)ERR_STR, sizeof(ERR_STR));
}
qm_uart_irq_read(QM_UART_1, &async_xfer_desc);
}
void uart_example_tx_callback(void *data, int error, qm_uart_status_t status, uint32_t len)
{
if (!error || error == -ECANCELED) {
// Transfer successful or RX terminated.
qm_uart_write_buffer(QM_UART_1, &rx_buffer[1], len-1);
rx_callback_invoked = true;
}
else {
qm_uart_write_buffer(QM_UART_1, (uint8_t *)ERR_STR, sizeof(ERR_STR));
}
}
