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Merge pull request #12186 from mprse/fix_for_issue_12172_stm_serial 

STM serial init: Set pin function only if pin is defined (not NC)
pull/12196/head
Martin Kojtal 2020-01-07 11:38:00 +01:00 committed by GitHub
parent 7d8eec4b4d 79d16ae8f7
commit 5d71e69f6a
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 2 additions and 3 deletions
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5
targets/TARGET_STM/serial_api.c
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@ -157,13 +157,12 @@ static void _serial_init_direct(serial_t *obj, const serial_pinmap_t *pinmap)
MBED_ASSERT(obj_s->index >= 0);
// Configure UART pins
pin_function(pinmap->tx_pin, pinmap->tx_function);
pin_function(pinmap->rx_pin, pinmap->rx_function);
if (pinmap->tx_pin != NC) {
pin_function(pinmap->tx_pin, pinmap->tx_function);
pin_mode(pinmap->tx_pin, PullUp);
}
if (pinmap->rx_pin != NC) {
pin_function(pinmap->rx_pin, pinmap->rx_function);
pin_mode(pinmap->rx_pin, PullUp);
}