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LPC55S69: Fix serial IRQ handling 

Check that the RX or TX interrupt is enabled before calling
a registered handler with RxIrq or TxIrq arg.
pull/12342/head
Filip Jagodzinski 2020-01-30 13:17:13 +01:00 committed by Przemyslaw Stekiel
parent 8dc15ee6e1
commit 83b7b6d142
1 changed files with 3 additions and 3 deletions
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6
targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC/serial_api.c
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@ -1,5 +1,5 @@
/* mbed Microcontroller Library
* Copyright (c) 2006-2013 ARM Limited
* Copyright (c) 2006-2020 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -189,10 +189,10 @@ void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_b
static inline void uart_irq(uint32_t transmit_empty, uint32_t receive_not_empty, uint32_t index)
{
if (serial_irq_ids[index] != 0) {
if (transmit_empty)
if (transmit_empty && (uart_addrs[index]->FIFOINTENSET & kUSART_TxLevelInterruptEnable))
irq_handler(serial_irq_ids[index], TxIrq);
if (receive_not_empty)
if (receive_not_empty && (uart_addrs[index]->FIFOINTENSET & kUSART_RxLevelInterruptEnable))
irq_handler(serial_irq_ids[index], RxIrq);
}
}