/**************************************************************************************************
* @fn sblExec
*
* @brief Infinite SBL execute loop that jumps upon receiving a code enable.
*
* input parameters
*
* None.
*
* output parameters
*
* None.
*
* @return None.
**************************************************************************************************
*/
static void sblExec(void)
{
uint32 dlyCnt = 0;
while (1)
{
HalUARTPollISR();
if (sbExec() && sbImgValid())
{
SB_TURN_ON_LED1();
SB_TURN_ON_LED2();
// Delay to allow the SB_ENABLE_CMD response to be flushed.
for (dlyCnt = 0; dlyCnt < 0x40000; dlyCnt++)
{
HalUARTPollISR();
}
sblJump();
}
else if (dlyCnt++ & 0x4000)
{
SB_TOGGLE_LED1();
}
}
}
/***************************************************************************************************
* @fn HalUARTPoll
*
* @brief Poll the UART.
*
* @param none
*
* @return none
*****************************************************************************/
void HalUARTPoll(void)
{
#if (HAL_UART_DMA && HAL_UART_SPI) // When both are defined, port is run-time choice.
if (HAL_UART_PORT)
{
HalUARTPollSPI();
}
else
{
HalUARTPollDMA();
}
#else
#if HAL_UART_DMA
HalUARTPollDMA();
#endif
#if HAL_UART_ISR
HalUARTPollISR();
#endif
#if HAL_UART_SPI
HalUARTPollSPI();
#endif
#if HAL_UART_USB
HalUARTPollUSB();
#endif
#endif
}
/***************************************************************************************************
* @fn HalUARTPoll
*
* @brief Poll the UART.
*
* @param none
*
* @return none
*****************************************************************************/
void HalUARTPoll(void)
{
#if HAL_UART_DMA
HalUARTPollDMA();
#endif
#if HAL_UART_ISR
HalUARTPollISR();
#endif
#if HAL_UART_USB
HalUARTPollUSB();
#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 None.
**************************************************************************************************
*/
static void sblWait(void)
{
uint32 dlyCnt = SB_UART_DELAY;
while (1)
{
uint8 ch;
HalUARTPollISR();
if (HalUARTReadISR(&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();
}
/***************************************************************************************************
* @fn HalUARTPoll
*
* @brief Poll the UART.
*
* @param none
*
* @return none
*****************************************************************************/
void HalUARTPoll(void)
{
if (ZNP_CFG1_SPI == znpCfg1)
{
return;
}
#if HAL_UART_DMA
HalUARTPollDMA();
#endif
#if HAL_UART_ISR
HalUARTPollISR();
#endif
#if HAL_UART_USB
HalUARTPollUSB();
#endif
}