K82F: Fix serial IRQ handling

Filip Jagodzinski · Filip Jagodzinski · commit 8e3ca20817d6 · 2019-06-07T16:47:59.000+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_K82F/serial_api.c b/targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_K82F/serial_api.c
@@ -152,10 +152,10 @@ 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 && (LPUART_GetEnabledInterrupts(uart_addrs[index]) & kLPUART_TxDataRegEmptyInterruptEnable))
             irq_handler(serial_irq_ids[index], TxIrq);
 
-        if (receive_full)
+        if (receive_full && (LPUART_GetEnabledInterrupts(uart_addrs[index]) & kLPUART_RxDataRegFullInterruptEnable))
             irq_handler(serial_irq_ids[index], RxIrq);
     }
 }

Original file line number	Diff line number	Diff line change
`@@ -152,10 +152,10 @@ static inline void uart_irq(uint32_t transmit_empty, uint32_t receive_full, uint`
`152`	`152`	`}`
`153`	`153`
`154`	`154`	`if (serial_irq_ids[index] != 0) {`
`155`		`- if (transmit_empty)`
	`155`	`+ if (transmit_empty && (LPUART_GetEnabledInterrupts(uart_addrs[index]) & kLPUART_TxDataRegEmptyInterruptEnable))`
`156`	`156`	`irq_handler(serial_irq_ids[index], TxIrq);`
`157`	`157`
`158`		`- if (receive_full)`
	`158`	`+ if (receive_full && (LPUART_GetEnabledInterrupts(uart_addrs[index]) & kLPUART_RxDataRegFullInterruptEnable))`
`159`	`159`	`irq_handler(serial_irq_ids[index], RxIrq);`
`160`	`160`	`}`
`161`	`161`	`}`