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Fix USART driver.

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This commit is contained in:
NIIBE Yutaka
2019-04-24 20:22:57 +09:00
parent c818ec89a4
commit d22ffb2d07
4 changed files with 53 additions and 22 deletions
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8
contrib/usart-stm32f103.c
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@@ -488,13 +488,14 @@ usart_block_sendrecv (uint8_t dev_no, const char *s_buf, uint16_t s_buflen,
USARTx->CR1 &= ~USART_CR1_TXEIE;
if (smartcard_mode)
{
if ((*timeout_block_p))
if (timeout_block_p && (*timeout_block_p))
do
r = USARTx->SR;
while (((r & USART_SR_TC) == 0));
usart_config_recv_enable (USARTx, 1);
if (*timeout_block_p == 0)
if (timeout_block_p && *timeout_block_p == 0)
{
/* Ignoring the echo back. */
do
@@ -514,6 +515,9 @@ usart_block_sendrecv (uint8_t dev_no, const char *s_buf, uint16_t s_buflen,
chopstx_intr_done (usartx_intr);
}
if (r_buf == NULL)
return 0;
/* Receiving part */
r = chopstx_poll (timeout_block_p, 1, ph);
if (r == 0)