void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
{
IRQn_Type uart_irqs[] = UART_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;
case 2:
vector = (uint32_t)&uart2_irq;
break;
default:
break;
}
if (enable) {
switch (irq) {
case RxIrq:
UART_EnableInterrupts(uart_addrs[obj->index], kUART_RxDataRegFullInterruptEnable);
break;
case TxIrq:
UART_EnableInterrupts(uart_addrs[obj->index], kUART_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:
UART_DisableInterrupts(uart_addrs[obj->index], kUART_RxDataRegFullInterruptEnable);
break;
case TxIrq:
UART_DisableInterrupts(uart_addrs[obj->index], kUART_TxDataRegEmptyInterruptEnable);
break;
default:
break;
}
switch (other_irq) {
case RxIrq:
all_disabled = ((UART_GetEnabledInterrupts(uart_addrs[obj->index]) & kUART_RxDataRegFullInterruptEnable) == 0);
break;
case TxIrq:
all_disabled = ((UART_GetEnabledInterrupts(uart_addrs[obj->index]) & kUART_TxDataRegEmptyInterruptEnable) == 0);
break;
default:
break;
}
if (all_disabled)
NVIC_DisableIRQ(uart_irqs[obj->index]);
}
}
static void uart_mcux_irq_rx_disable(struct device *dev)
{
const struct uart_mcux_config *config = dev->config->config_info;
u32_t mask = kUART_RxDataRegFullInterruptEnable;
UART_DisableInterrupts(config->base, mask);
}
static void uart_mcux_irq_err_disable(struct device *dev)
{
const struct uart_mcux_config *config = dev->config->config_info;
u32_t mask = kUART_NoiseErrorInterruptEnable |
kUART_FramingErrorInterruptEnable |
kUART_ParityErrorInterruptEnable;
UART_DisableInterrupts(config->base, mask);
}
int hal_uart_close(int port)
{
struct hal_uart *u;
if (port >= FSL_FEATURE_SOC_UART_COUNT) {
return -1;
}
u = &uarts[port];
if (!u->u_open) {
return -1;
}
u->u_open = 0;
UART_DisableInterrupts(u->u_base, kUART_RxDataRegFullInterruptEnable | kUART_RxOverrunInterruptEnable | kUART_TxDataRegEmptyInterruptEnable);
DisableIRQ(u->u_irq);
UART_EnableTx(u->u_base, false);
UART_EnableRx(u->u_base, false);
return 0;
}