create minimum viable product

- 12 x 16bit registers
 - [2*n] = 12bit constant current value
 - [2*n+1] = 8bit PWM value

Src/main.c

@@ -58,6 +58,50 @@ void SystemClock_Config(void);
 
 /* Private user code ---------------------------------------------------------*/
 /* USER CODE BEGIN 0 */
+
+bool dirty = false;
+uint16_t mem[12] = {0};
+
+#define BUFFER_SIZE 64
+uint16_t RX_Buffer[BUFFER_SIZE] = {0};
+
+void HAL_SPI_CpltCallback(SPI_HandleTypeDef *hspi) {
+
+    if(RX_Buffer[0]) {
+        union {
+            struct {
+                unsigned data: 16;
+                unsigned addr: 12;
+                unsigned op: 4;
+            } __attribute__((packed));
+            struct {
+                uint16_t high;
+                uint16_t low;
+            } __attribute__((packed));
+
+        } frame = {.low=RX_Buffer[0], .high = RX_Buffer[1]};
+
+        if(frame.op == 0xA && frame.addr <= 16) {
+            mem[frame.addr] = frame.data;
+            dirty = true;
+        }
+
+    }
+    HAL_SPI_Receive_DMA(&hspi2, (uint8_t *) RX_Buffer, 4);
+}
+
+void HAL_SPI_RxCpltCallback(SPI_HandleTypeDef *hspi) {
+    HAL_SPI_CpltCallback(hspi);
+}
+
+void HAL_SPI_TxRxCpltCallback(SPI_HandleTypeDef *hspi) {
+    HAL_SPI_CpltCallback(hspi);
+}
+
+void HAL_SPI_TxCpltCallback(SPI_HandleTypeDef *hspi) {
+    //HAL_SPI_Transmit_DMA(&hspi2, (uint8_t *) TX_Buffer, 4);
+}
+
 void initPWM(TIM_HandleTypeDef timer, uint32_t channel, uint16_t period,
              uint16_t pulse) {
     //HAL_TIM_PWM_Stop(&timer, channel);
@@ -90,55 +134,9 @@ void setPWM(TIM_HandleTypeDef timer, uint32_t channel, uint16_t period,
 }
 
 void setDAC(uint8_t channel, uint16_t val) {
-    uint16_t frame = val & 0x0FFF | 0x7000 & (channel << 12);
+    uint16_t frame = (val & 0x0FFF) | (0x7000 & (channel << 12));
     HAL_SPI_Transmit(&hspi1, (uint8_t *) &frame, 1, 100);
 }
-
-bool dirty = false;
-uint16_t mem[12] = {0};
-
-#define BUFFER_SIZE 64
-uint16_t RX_Buffer[BUFFER_SIZE] = {0};
-uint16_t TX_Buffer[BUFFER_SIZE] = {0};
-
-void HAL_SPI_CpltCallback(SPI_HandleTypeDef *hspi) {
-
-    if(RX_Buffer[0]) {
-        //HAL_SPI_Transmit_DMA(&hspi2, (uint8_t *) TX_Buffer, 4);
-        union {
-            struct {
-                unsigned dat: 16;
-                unsigned addr: 12;
-                unsigned op: 4;
-            } __attribute__((packed));
-            struct {
-                uint16_t high;
-                uint16_t low;
-            } __attribute__((packed));
-
-        } frame = {.low=RX_Buffer[0], .high = RX_Buffer[1]};
-        frame.op = 0xe;
-        TX_Buffer[1] = frame.high;
-        TX_Buffer[0] = frame.low;
-        HAL_SPI_TransmitReceive_DMA(&hspi2, (uint8_t *) TX_Buffer, (uint8_t *) RX_Buffer, 4);
-    } else {
-        //HAL_GPIO_WritePin(GPIOB, GPIO_PIN_14, GPIO_PIN_SET);
-        HAL_SPI_Receive_DMA(&hspi2, (uint8_t *) RX_Buffer, 4);
-        //HAL_GPIO_WritePin(GPIOB, GPIO_PIN_14, GPIO_PIN_RESET);
-    }
-}
-
-void HAL_SPI_RxCpltCallback(SPI_HandleTypeDef *hspi) {
-    HAL_SPI_CpltCallback(hspi);
-}
-
-void HAL_SPI_TxRxCpltCallback(SPI_HandleTypeDef *hspi) {
-    HAL_SPI_CpltCallback(hspi);
-}
-
-void HAL_SPI_TxCpltCallback(SPI_HandleTypeDef *hspi) {
-    //HAL_SPI_Transmit_DMA(&hspi2, (uint8_t *) TX_Buffer, 4);
-}
 /* USER CODE END 0 */
 
 /**
@@ -176,63 +174,27 @@ int main(void) {
     MX_SPI1_Init();
     MX_SPI2_Init();
 
-    /*GPIO_InitTypeDef GPIO_InitStruct = {0};
-    GPIO_InitStruct.Pin = GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11;
-    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
-    GPIO_InitStruct.Pull = GPIO_NOPULL;
-    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
-    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
-    GPIO_InitStruct.Pin = GPIO_PIN_4 | GPIO_PIN_5;
+    HAL_GPIO_WritePin(SIGNAL_LED_GPIO_Port, SIGNAL_LED_Pin, GPIO_PIN_RESET);
-    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
-    GPIO_InitStruct.Pull = GPIO_NOPULL;
-    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
-    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
-
-    HAL_GPIO_WritePin(GPIOA, GPIO_PIN_8, GPIO_PIN_SET);
-    HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_SET);
-    HAL_GPIO_WritePin(GPIOA, GPIO_PIN_10, GPIO_PIN_SET);
-    HAL_GPIO_WritePin(GPIOA, GPIO_PIN_11, GPIO_PIN_SET);
-
-    HAL_GPIO_WritePin(GPIOB, GPIO_PIN_4, GPIO_PIN_SET);
-    HAL_GPIO_WritePin(GPIOB, GPIO_PIN_5, GPIO_PIN_SET);*/
-
-
-
-    setDAC(0, 50 << 4);
-    setDAC(1, 50 << 4);
-    setDAC(2, 50 << 4);
-    setDAC(3, 50 << 4);
-    setDAC(4, 50 << 4);
-    setDAC(5, 50 << 4);
-
-    initPWM(htim1, TIM_CHANNEL_1, 255, 10);
-    initPWM(htim1, TIM_CHANNEL_2, 255, 10);
-    initPWM(htim1, TIM_CHANNEL_3, 255, 10);
-    initPWM(htim1, TIM_CHANNEL_4, 255, 10);
-    initPWM(htim3, TIM_CHANNEL_1, 255, 10);
-    initPWM(htim3, TIM_CHANNEL_2, 255, 10);
 
     uint16_t frame = 0b1001000000000000;
     HAL_SPI_Transmit(&hspi1, (uint8_t *) &frame, 1, 100);
 
+    for (int i = 0; i < 6; ++i) {
+        setDAC(i, mem[i * 2]);
+    }
+
+    initPWM(htim1, TIM_CHANNEL_1, 255, 0xFF & mem[1]);
+    initPWM(htim1, TIM_CHANNEL_2, 255, 0xFF & mem[3]);
+    initPWM(htim1, TIM_CHANNEL_3, 255, 0xFF & mem[5]);
+    initPWM(htim1, TIM_CHANNEL_4, 255, 0xFF & mem[7]);
+    initPWM(htim3, TIM_CHANNEL_1, 255, 0xFF & mem[9]);
+    initPWM(htim3, TIM_CHANNEL_2, 255, 0xFF & mem[11]);
+
+    HAL_GPIO_WritePin(SIGNAL_LED_GPIO_Port, SIGNAL_LED_Pin, GPIO_PIN_SET);
+
     HAL_SPI_Receive_DMA(&hspi2, (uint8_t *) RX_Buffer, 4);
 
-    /*Configure GPIO pin : PtPin */
-    /*GPIO_InitTypeDef GPIO_InitStruct = {0};
-    GPIO_InitStruct.Pin = GPIO_PIN_14;
-    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
-    GPIO_InitStruct.Pull = GPIO_NOPULL;
-    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
-    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);*/
-
-    /*GPIO_InitTypeDef GPIO_InitStruct = {0};
-    GPIO_InitStruct.Pin = GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11;
-    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
-    GPIO_InitStruct.Pull = GPIO_NOPULL;
-    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
-    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);*/
-
     /* USER CODE END 2 */
 
     /* Infinite loop */
@@ -242,116 +204,25 @@ int main(void) {
 
         /* USER CODE BEGIN 3 */
 
-        /*
+        if(dirty) {
-        setPWM(htim1, TIM_CHANNEL_1, 255, 255);
-        setPWM(htim1, TIM_CHANNEL_2, 255, 255);
-        setPWM(htim1, TIM_CHANNEL_3, 255, 255);
-        setPWM(htim1, TIM_CHANNEL_4, 255, 255);
-        setPWM(htim3, TIM_CHANNEL_1, 255, 255);
-        setPWM(htim3, TIM_CHANNEL_1, 255, 255);*/
-
-        /*for (int j = 0; j < 20; j++)
-            for (int i = 0; i < 20; i++) {
-            HAL_GPIO_WritePin(GPIOA, GPIO_PIN_8, GPIO_PIN_SET);
-            HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_SET);
-            HAL_GPIO_WritePin(GPIOA, GPIO_PIN_10, GPIO_PIN_SET);
-            HAL_GPIO_WritePin(GPIOA, GPIO_PIN_11, GPIO_PIN_SET);
-            HAL_GPIO_WritePin(SIGNAL_LED_GPIO_Port, SIGNAL_LED_Pin, GPIO_PIN_SET);
-            HAL_Delay(j);
-            HAL_GPIO_WritePin(GPIOA, GPIO_PIN_8, GPIO_PIN_RESET);
-            HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_RESET);
-            HAL_GPIO_WritePin(GPIOA, GPIO_PIN_10, GPIO_PIN_RESET);
-            HAL_GPIO_WritePin(GPIOA, GPIO_PIN_11, GPIO_PIN_RESET);
             HAL_GPIO_WritePin(SIGNAL_LED_GPIO_Port, SIGNAL_LED_Pin, GPIO_PIN_RESET);
-            HAL_Delay(19-j);
+            for (int i = 0; i < 6; ++i) {
-        }*/
+                setDAC(i, mem[i * 2]);
-
-        /*for (int i = 50; i < 256; i++) {
-            setPWM(htim1, TIM_CHANNEL_1, 255, i);
-            setPWM(htim1, TIM_CHANNEL_2, 255, i);
-            setPWM(htim1, TIM_CHANNEL_3, 255, i);
-            setPWM(htim1, TIM_CHANNEL_4, 255, i);
-            HAL_Delay(5);
-        }*/
-
-        for (int i = 50; i < 256; i++) {
-            setDAC(0, i << 4);
-            setDAC(1, i << 4);
-            setDAC(2, i << 4);
-            setDAC(3, i << 4);
-            setDAC(4, i << 4);
-            setDAC(5, i << 4);
-            HAL_Delay(5);
-        }
-        for (int i = 0; i < 206; i++) {
-            setDAC(0, (255 - i) << 4);
-            setDAC(1, (255 - i) << 4);
-            setDAC(2, (255 - i) << 4);
-            setDAC(3, (255 - i) << 4);
-            setDAC(4, (255 - i) << 4);
-            setDAC(5, (255 - i) << 4);
-            HAL_Delay(5);
             }
 
+            initPWM(htim1, TIM_CHANNEL_1, 255, 0xFF & mem[1]);
+            initPWM(htim1, TIM_CHANNEL_2, 255, 0xFF & mem[3]);
+            initPWM(htim1, TIM_CHANNEL_3, 255, 0xFF & mem[5]);
+            initPWM(htim1, TIM_CHANNEL_4, 255, 0xFF & mem[7]);
+            initPWM(htim3, TIM_CHANNEL_1, 255, 0xFF & mem[9]);
+            initPWM(htim3, TIM_CHANNEL_2, 255, 0xFF & mem[11]);
 
-        //HAL_SPI
+            dirty = false;
-
+            HAL_GPIO_WritePin(SIGNAL_LED_GPIO_Port, SIGNAL_LED_Pin, GPIO_PIN_SET);
-        /*uint16_t val = 682;
-        setDAC(0, val);
-        setDAC(1, val);
-        setDAC(2, val);
-        setDAC(3, val);
-        setDAC(4, val);
-        setDAC(5, val);
-         */
-
-        // HAL_Delay(500);
-
-        //HAL_GPIO_WritePin(SIGNAL_LED_GPIO_Port, SIGNAL_LED_Pin, GPIO_PIN_SET);
-
-        //HAL_Delay(500);
-
-        initPWM(htim1, TIM_CHANNEL_1, 255, 255);
-        initPWM(htim1, TIM_CHANNEL_2, 255, 255);
-        initPWM(htim1, TIM_CHANNEL_3, 255, 255);
-        initPWM(htim1, TIM_CHANNEL_4, 255, 255);
-        initPWM(htim3, TIM_CHANNEL_1, 255, 255);
-        initPWM(htim3, TIM_CHANNEL_2, 255, 255);
-
-        for (int i = 50; i < 256; i++) {
-            setDAC(0, i << 4);
-            setDAC(1, i << 4);
-            setDAC(2, i << 4);
-            setDAC(3, i << 4);
-            setDAC(4, i << 4);
-            setDAC(5, i << 4);
-            HAL_Delay(5);
-        }
-        for (int i = 0; i < 206; i++) {
-            setDAC(0, (255 - i) << 4);
-            setDAC(1, (255 - i) << 4);
-            setDAC(2, (255 - i) << 4);
-            setDAC(3, (255 - i) << 4);
-            setDAC(4, (255 - i) << 4);
-            setDAC(5, (255 - i) << 4);
-            HAL_Delay(5);
         }
+        HAL_Delay(50);
 
-        initPWM(htim1, TIM_CHANNEL_1, 255, 10);
-        initPWM(htim1, TIM_CHANNEL_2, 255, 10);
-        initPWM(htim1, TIM_CHANNEL_3, 255, 10);
-        initPWM(htim1, TIM_CHANNEL_4, 255, 10);
-        initPWM(htim3, TIM_CHANNEL_1, 255, 10);
-        initPWM(htim3, TIM_CHANNEL_2, 255, 10);
 
-        /*HAL_Delay(5000);
-        val = 0xFFF;
-        setDAC(0, val);
-        setDAC(1, val);
-        setDAC(2, val);
-        setDAC(3, val);
-        setDAC(4, val);
-        setDAC(5, val);*/
     }
     /* USER CODE END 3 */
 }