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-rw-r--r--ports/stm32/uart.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ports/stm32/uart.c b/ports/stm32/uart.c
index 74e601f3b..4031d8acd 100644
--- a/ports/stm32/uart.c
+++ b/ports/stm32/uart.c
@@ -517,7 +517,7 @@ mp_uint_t uart_rx_any(pyb_uart_obj_t *self) {
} else if (buffer_bytes > 0) {
return buffer_bytes;
} else {
- return UART_RXNE_IS_SET(self->uartx);
+ return UART_RXNE_IS_SET(self->uartx) != 0;
}
}