HAL_StatusTypeDef HAL_LCD_Write(LCD_HandleTypeDef *hlcd, uint32_t RAMRegisterIndex, uint32_t RAMRegisterMask, uint32_t Data)
{
uint32_t tickstart = 0x00;
if((hlcd->State == HAL_LCD_STATE_READY) || (hlcd->State == HAL_LCD_STATE_BUSY))
{
/* Check the parameters */
assert_param(IS_LCD_RAM_REGISTER(RAMRegisterIndex));
if(hlcd->State == HAL_LCD_STATE_READY)
{
/* Process Locked */
__HAL_LOCK(hlcd);
hlcd->State = HAL_LCD_STATE_BUSY;
/* Get timeout */
tickstart = HAL_GetTick();
/*!< Wait Until the LCD is ready */
while(__HAL_LCD_GET_FLAG(hlcd, LCD_FLAG_UDR) != RESET)
{
if((HAL_GetTick() - tickstart ) > LCD_TIMEOUT_VALUE)
{
hlcd->ErrorCode = HAL_LCD_ERROR_UDR;
/* Process Unlocked */
__HAL_UNLOCK(hlcd);
return HAL_TIMEOUT;
}
}
}
/* Copy the new Data bytes to LCD RAM register */
MODIFY_REG(hlcd->Instance->RAM[RAMRegisterIndex], ~(RAMRegisterMask), Data);
return HAL_OK;
}
else
{
return HAL_ERROR;
}
}
|
楼主
