void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
{
IRQn_Type uart_irqs[] = LPUART_RX_TX_IRQS;
uint32_t vector = 0;
switch (obj->index) {
case 0:
vector = (uint32_t)&uart0_irq;
break;
case 1:
vector = (uint32_t)&uart1_irq;
break;
default:
break;
}
if (enable) {
switch (irq) {
case RxIrq:
LPUART_EnableInterrupts(uart_addrs[obj->index], kLPUART_RxDataRegFullInterruptEnable);
break;
case TxIrq:
LPUART_EnableInterrupts(uart_addrs[obj->index], kLPUART_TxDataRegEmptyInterruptEnable);
break;
default:
break;
}
NVIC_SetVector(uart_irqs[obj->index], vector);
NVIC_EnableIRQ(uart_irqs[obj->index]);
} else { // disable
int all_disabled = 0;
SerialIrq other_irq = (irq == RxIrq) ? (TxIrq) : (RxIrq);
switch (irq) {
case RxIrq:
LPUART_DisableInterrupts(uart_addrs[obj->index], kLPUART_RxDataRegFullInterruptEnable);
break;
case TxIrq:
LPUART_DisableInterrupts(uart_addrs[obj->index], kLPUART_TxDataRegEmptyInterruptEnable);
break;
default:
break;
}
switch (other_irq) {
case RxIrq:
all_disabled = ((LPUART_GetEnabledInterrupts(uart_addrs[obj->index]) & kLPUART_RxDataRegFullInterruptEnable) == 0);
break;
case TxIrq:
all_disabled = ((LPUART_GetEnabledInterrupts(uart_addrs[obj->index]) & kLPUART_TxDataRegEmptyInterruptEnable) == 0);
break;
default:
break;
}
if (all_disabled)
NVIC_DisableIRQ(uart_irqs[obj->index]);
}
}
static int mcux_lpuart_irq_rx_ready(struct device *dev)
{
const struct mcux_lpuart_config *config = dev->config->config_info;
u32_t mask = kLPUART_RxDataRegFullInterruptEnable;
return (LPUART_GetEnabledInterrupts(config->base) & mask)
&& mcux_lpuart_irq_rx_full(dev);
}
static int mcux_lpuart_irq_tx_ready(struct device *dev)
{
const struct mcux_lpuart_config *config = dev->config->config_info;
u32_t mask = kLPUART_TxDataRegEmptyInterruptEnable;
return (LPUART_GetEnabledInterrupts(config->base) & mask)
&& mcux_lpuart_irq_tx_complete(dev);
}
