Question
READ_BIT(heth->Instance->DMABMR, ETH_DMABMR_SR) is not change
Hi i'm trying tcp server with stm32f427 which combined LAN8720A phy chip
I got a problem with this code
HAL_StatusTypeDef HAL_ETH_Init(ETH_HandleTypeDef *heth)
{
uint32_t tickstart;
if (heth == NULL)
{
return HAL_ERROR;
}
if (heth->gState == HAL_ETH_STATE_RESET)
{
heth->gState = HAL_ETH_STATE_BUSY;
#if (USE_HAL_ETH_REGISTER_CALLBACKS == 1)
ETH_InitCallbacksToDefault(heth);
if (heth->MspInitCallback == NULL)
{
heth->MspInitCallback = HAL_ETH_MspInit;
}
/* Init the low level hardware */
heth->MspInitCallback(heth);
#else
/* Init the low level hardware : GPIO, CLOCK, NVIC. */
HAL_ETH_MspInit(heth);
#endif /* (USE_HAL_ETH_REGISTER_CALLBACKS) */
}
__HAL_RCC_SYSCFG_CLK_ENABLE();
/* Select MII or RMII Mode*/
SYSCFG->PMC &= ~(SYSCFG_PMC_MII_RMII_SEL);
SYSCFG->PMC |= (uint32_t)heth->Init.MediaInterface;
/* Dummy read to sync SYSCFG with ETH */
(void)SYSCFG->PMC;
/* Ethernet Software reset */
/* Set the SWR bit: resets all MAC subsystem internal registers and logic */
/* After reset all the registers holds their respective reset values */
SET_BIT(heth->Instance->DMABMR, ETH_DMABMR_SR);
/* Get tick */
tickstart = HAL_GetTick();
/* Wait for software reset */
while (READ_BIT(heth->Instance->DMABMR, ETH_DMABMR_SR) > 0U)
{
if (((HAL_GetTick() - tickstart) > ETH_SWRESET_TIMEOUT))
{
/* Set Error Code */
heth->ErrorCode = HAL_ETH_ERROR_TIMEOUT;
/* Set State as Error */
heth->gState = HAL_ETH_STATE_ERROR;
/* Return Error */
return HAL_ERROR;
}
}
...In this code read bit is just be 1 and never changed
I got tried another LAN8720A which package is diff one but it works..!?
I dont understand what happen..but I just wanna know which should i check for this situation..
thanks