/*****************************************************************************
* @fn HalUARTRead
*
* @brief Read a buffer from the UART
*
* @param port - USART module designation
* buf - valid data buffer at least 'len' bytes in size
* len - max length number of bytes to copy to 'buf'
*
* @return length of buffer that was read
*****************************************************************************/
uint16 HalUARTRead(uint8 port, uint8 *buf, uint16 len)
{
#if (HAL_UART_DMA == 1)
if (port == HAL_UART_PORT_0) return HalUARTReadDMA(buf, len);
#endif
#if (HAL_UART_DMA == 2)
if (port == HAL_UART_PORT_1) return HalUARTReadDMA(buf, len);
#endif
#if (HAL_UART_ISR == 1)
if (port == HAL_UART_PORT_0) return HalUARTReadISR(buf, len);
#endif
#if (HAL_UART_ISR == 2)
if (port == HAL_UART_PORT_1) return HalUARTReadISR(buf, len);
#endif
#if (HAL_UART_SPI == 1)
if (port == HAL_UART_PORT_0) return HalUARTReadSPI(buf, len);
#endif
#if (HAL_UART_SPI == 2)
if (port == HAL_UART_PORT_1) return HalUARTReadSPI(buf, len);
#endif
#if HAL_UART_USB
return HalUARTRx(buf, len);
#else
#if (HAL_UART_DMA == 0) && (HAL_UART_ISR == 0) && (HAL_UART_SPI == 0)
// UART is not enabled. Do nothing.
(void) port; // unused argument
(void) buf; // unused argument
(void) len; // unused argument
#endif
return 0;
#endif
}
/*****************************************************************************
* @fn HalUARTRead
*
* @brief Read a buffer from the UART
*
* @param port - USART module designation
* buf - valid data buffer at least 'len' bytes in size
* len - max length number of bytes to copy to 'buf'
*
* @return length of buffer that was read
*****************************************************************************/
uint16 HalUARTRead(uint8 port, uint8 *buf, uint16 len)
{
(void)port;
(void)buf;
(void)len;
#if (HAL_UART_DMA == 1)
if (port == HAL_UART_PORT_0) return HalUARTReadDMA(buf, len);
#endif
#if (HAL_UART_DMA == 2)
if (port == HAL_UART_PORT_1) return HalUARTReadDMA(buf, len);
#endif
#if (HAL_UART_ISR == 1)
if (port == HAL_UART_PORT_0) return HalUARTReadISR(buf, len);
#endif
#if (HAL_UART_ISR == 2)
if (port == HAL_UART_PORT_1) return HalUARTReadISR(buf, len);
#endif
#if HAL_UART_USB
return HalUARTRx(buf, len);
#else
return 0;
#endif
}
/*************************************************************************************************
* @fn HalUARTRead()
*
* @brief Read a buffer from the UART
*
* @param port - UART port (not used.)
* ppBuffer - pointer to a pointer that points to the data that will be read
* length - length of the requested buffer
*
* @return length of buffer that was read
*************************************************************************************************/
uint16 HalUARTRead ( uint8 port, uint8 *pBuffer, uint16 length )
{
#if HAL_UART_USB
return HalUARTRx(pBuffer, length);
#else
return (HalUARTReadIsr( port, pBuffer, length ));
#endif
}
/**************************************************************************************************
* @fn sblWait
*
* @brief A timed-out wait loop that exits early upon receiving a force code/sbl byte.
*
* input parameters
*
* None.
*
* output parameters
*
* None.
*
* @return TRUE to run the code image, FALSE to run the SBL.
**************************************************************************************************
*/
static uint8 sblWait(void)
{
uint32 dlyCnt = 0x260000;
uint8 rtrn = FALSE;
HAL_ENABLE_INTERRUPTS();
while (1)
{
uint8 ch;
HalUARTPollUSB();
if (HalUARTRx(&ch, 1))
{
if (ch == SB_FORCE_BOOT)
{
break;
}
else if (ch == SB_FORCE_RUN)
{
dlyCnt = 0;
}
}
if (SB1_PRESS)
{
break;
}
if (SB2_PRESS || (dlyCnt-- == 0))
{
rtrn = TRUE;
break;
}
// RR-xing LED display while waiting.
if (dlyCnt & 0x2000)
{
SB_TURN_OFF_LED2();
SB_TURN_ON_LED1();
}
else
{
SB_TURN_OFF_LED1();
SB_TURN_ON_LED2();
}
}
HAL_DISABLE_INTERRUPTS();
SB_TURN_OFF_LED1();
SB_TURN_OFF_LED2();
return rtrn;
}
/**************************************************************************************************
* @fn sblWait
*
* @brief A timed-out wait loop that exits early upon receiving a force code/sbl byte.
*
* input parameters
*
* None.
*
* output parameters
*
* None.
*
* @return None.
**************************************************************************************************
*/
static void sblWait(void)
{
uint32 dlyCnt = SB_UART_DELAY;
while (1)
{
uint8 ch;
HalUARTPollUSB();
if (HalUARTRx(&ch, 1))
{
if (ch == SB_FORCE_BOOT)
{
break;
}
else if (ch == SB_FORCE_RUN)
{
dlyCnt = 0;
}
}
if (SB1_PRESS)
{
break;
}
if (SB2_PRESS || (dlyCnt-- == 0))
{
sblJump();
}
// RR-xing LED display while waiting.
if (dlyCnt & 0x2000)
{
SB_TURN_OFF_LED2();
SB_TURN_ON_LED1();
}
else
{
SB_TURN_OFF_LED1();
SB_TURN_ON_LED2();
}
}
SB_TURN_OFF_LED1();
SB_TURN_OFF_LED2();
}
