K24F: Fix serial IRQ handling

Filip Jagodzinski · Filip Jagodzinski · commit 01e130ba8392 · 2019-06-07T16:19:25.000+02:00
Check that the RX or TX interrupt is enabled before calling
a registered handler with RxIrq or TxIrq arg.
diff --git a/targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_MCU_K24F/serial_api.c b/targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_MCU_K24F/serial_api.c
@@ -140,10 +140,10 @@ static inline void uart_irq(uint32_t transmit_empty, uint32_t receive_full, uint
     }
 
     if (serial_irq_ids[index] != 0) {
-        if (transmit_empty)
+        if (transmit_empty && (UART_GetEnabledInterrupts(uart_addrs[index]) & kUART_TxDataRegEmptyInterruptEnable))
             irq_handler(serial_irq_ids[index], TxIrq);
 
-        if (receive_full)
+        if (receive_full && (UART_GetEnabledInterrupts(uart_addrs[index]) & kUART_RxDataRegFullInterruptEnable))
             irq_handler(serial_irq_ids[index], RxIrq);
     }
 }

Original file line number	Diff line number	Diff line change
`@@ -140,10 +140,10 @@ static inline void uart_irq(uint32_t transmit_empty, uint32_t receive_full, uint`
`140`	`140`	`}`
`141`	`141`
`142`	`142`	`if (serial_irq_ids[index] != 0) {`
`143`		`- if (transmit_empty)`
	`143`	`+ if (transmit_empty && (UART_GetEnabledInterrupts(uart_addrs[index]) & kUART_TxDataRegEmptyInterruptEnable))`
`144`	`144`	`irq_handler(serial_irq_ids[index], TxIrq);`
`145`	`145`
`146`		`- if (receive_full)`
	`146`	`+ if (receive_full && (UART_GetEnabledInterrupts(uart_addrs[index]) & kUART_RxDataRegFullInterruptEnable))`
`147`	`147`	`irq_handler(serial_irq_ids[index], RxIrq);`
`148`	`148`	`}`
`149`	`149`	`}`