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Merge pull request #3171 from ErnestChen1/master 

[DeviceDrivers] add warning about overflowing by serial receiver
This commit is contained in:
Bernard Xiong 2019-11-01 15:21:45 +08:00 committed by GitHub
parent e1a01253fa f82d4f1f6f
commit 2c55f11b67
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 15 additions and 0 deletions
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15
components/drivers/serial/serial.c
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@ -327,6 +327,18 @@ rt_inline int _serial_int_tx(struct rt_serial_device *serial, const rt_uint8_t *
return size - length;
}
static void _serial_check_buffer_size(void)
{
static rt_bool_t already_output = RT_FALSE;
if (already_output == RT_FALSE)
{
LOG_W("Warning: There is no enough buffer for saving data,"
" please increase the RT_SERIAL_RB_BUFSZ option.");
already_output = RT_TRUE;
}
}
#if defined(RT_USING_POSIX) || defined(RT_SERIAL_USING_DMA)
static rt_size_t _serial_fifo_calc_recved_len(struct rt_serial_device *serial)
{
@ -430,6 +442,7 @@ static void rt_dma_recv_update_put_index(struct rt_serial_device *serial, rt_siz
if(rx_fifo->is_full == RT_TRUE)
{
_serial_check_buffer_size();
rx_fifo->get_index = rx_fifo->put_index;
}
}
@ -1170,6 +1183,8 @@ void rt_hw_serial_isr(struct rt_serial_device *serial, int event)
rx_fifo->get_index += 1;
rx_fifo->is_full = RT_TRUE;
if (rx_fifo->get_index >= serial->config.bufsz) rx_fifo->get_index = 0;
_serial_check_buffer_size();
}
/* enable interrupt */