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drivers: serial: esp32: Return transmitted character on success

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When transmitting to the UART interface using polled mode, the ESP32
driver would return 0 regardless of the success state.  Return the
character that has been transmitted to comply with the API.

Jira: ZEP-2552
Signed-off-by: Leandro Pereira <leandro.pereira@intel.com>
This commit is contained in:
Leandro Pereira 2017-08-22 13:00:48 -07:00 • committed by Anas Nashif
commit 884a385fc6
1 changed files with 1 additions and 1 deletions
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2
drivers/serial/uart_esp32.c
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@ -18,7 +18,7 @@ static unsigned char esp32_uart_tx(struct device *dev,
uart_tx_one_char(c);
return 0;
return c;
}
static int esp32_uart_rx(struct device *dev, unsigned char *p_char)