1 | /*
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2 | * When the Analog Watchdog is tripped this callback function gets executed
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3 | */
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4 | void HAL_ADC_LevelOutOfWindowCallback(ADC_HandleTypeDef* hadc)
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5 | {
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6 | DMA_Stream_TypeDef * dmaStreamTypeDefInstance = hadc->DMA_Handle->Instance;
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7 |
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8 | // (1) Stop ongoing DMA transfer with setting EN to Zero
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9 | dmaStreamTypeDefInstance->CR &= ~DMA_SxCR_EN;
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10 | //DMA Channel is stopped when EN is 0
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11 | uint8_t i = 0;
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12 | while(hadc->DMA_Handle->Instance->CR & DMA_SxCR_EN )
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13 | {
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14 | //DMA not Stopping )-;
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15 | if(i>100)
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16 | _Error_Handler(__FILE__, __LINE__);
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17 | i++;
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18 | }
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19 | //DMA now is stopped and can be reconfigured
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20 |
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21 | //Read the position of the last circular write operation - needed for later move operations and is away when restarting
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22 | uint32_t ndtr = dmaStreamTypeDefInstance->NDTR;
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23 |
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24 | // (2) Set Peripherial Register
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25 | // Nothing TODO
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26 |
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27 | // (3) Set Memory Address
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28 | dmaStreamTypeDefInstance->M0AR = (uint32_t)memoryPostRecordPtr;
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29 |
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30 | // (4) Configure Item Numbers
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31 | dmaStreamTypeDefInstance->NDTR = memoryPostRecord;
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32 |
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33 | // (5) Set DMA channel
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34 | // (6) Set Flow CNTRL
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35 | // (7) Configure Stream Priority
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36 | // (8) FIFO Mode
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37 | // (9) Configure Direction, increment, data widths, circular and interrupts
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38 | // Disable Circular mode Enable DMA
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39 | dmaStreamTypeDefInstance->CR &= (~DMA_SxCR_CIRC);
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40 |
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41 | // (10) (Re)Enable DMA
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42 | dmaStreamTypeDefInstance->CR |= DMA_SxCR_EN ;
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43 |
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44 | if(hadc1.Instance->SR & ADC_SR_OVR)
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45 | HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, GPIO_PIN_SET);
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46 | if(!(dmaStreamTypeDefInstance->CR&DMA_SxCR_EN))
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47 | HAL_GPIO_WritePin(white_Led_GPIO_Port, white_Led_Pin, GPIO_PIN_SET);
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48 |
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49 |
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50 |
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51 | //Disable Analog Watchdog before exiting
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52 | hadc->Instance->CR1 &= (~ADC_CR1_AWDEN);
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53 |
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54 | //Calculate the position of the last circular write operation
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55 | uint32_t elementPos = memoryCyclicSize - 1 - ndtr;
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56 | uint16_t* ndtrPtr = &memoryCyclicPtr[elementPos];
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57 |
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58 | //Set LD2 LED
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59 | HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, GPIO_PIN_SET);
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60 |
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61 | systemState = LinearRecordingAndDataRearrangement;
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62 | }
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