K66F: Fix serial IRQ handling

Filip Jagodzinski · Filip Jagodzinski · commit 9efaabe40456 · 2019-06-07T16:41:36.000+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_K66F/serial_api.c b/targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_K66F/serial_api.c
@@ -127,10 +127,10 @@ 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
`@@ -127,10 +127,10 @@ static inline void uart_irq(uint32_t transmit_empty, uint32_t receive_full, uint`
`127`	`127`	`}`
`128`	`128`
`129`	`129`	`if (serial_irq_ids[index] != 0) {`
`130`		`- if (transmit_empty)`
	`130`	`+ if (transmit_empty && (UART_GetEnabledInterrupts(uart_addrs[index]) & kUART_TxDataRegEmptyInterruptEnable))`
`131`	`131`	`irq_handler(serial_irq_ids[index], TxIrq);`
`132`	`132`
`133`		`- if (receive_full)`
	`133`	`+ if (receive_full && (UART_GetEnabledInterrupts(uart_addrs[index]) & kUART_RxDataRegFullInterruptEnable))`
`134`	`134`	`irq_handler(serial_irq_ids[index], RxIrq);`
`135`	`135`	`}`
`136`	`136`	`}`