Changeset 77 for trunk

Timestamp:

Sep 9, 2026, 3:57:36 PM (11 days ago)

Author:

f.jahn

Message:

Slave address can be now set up by a user button at the program start.

Location:

trunk/fw_g473rct/Core

Files:

• Inc/main.h (modified) (1 diff)
• Src/main.c (modified) (4 diffs)

trunk/fw_g473rct/Core/Inc/main.h

@@ -58 +58 @@
 
 #define VREF                                                              3000
+
+#define BUZZER_ON                                                         GPIO_PIN_SET
+#define BUZZER_OFF                                                        GPIO_PIN_RESET
+
+#define BTN_PRESSED                                                       GPIO_PIN_RESET
+#define BTN_NOT_PRESSED                                           GPIO_PIN_SET
+
 /* USER CODE END EC */
 

trunk/fw_g473rct/Core/Src/main.c

@@ -122 +122 @@
 void processUSB(ring_buffer_t* const ring_in_buff, ring_buffer_t* const ring_out_buff);
 void ADC2_SetOffset(uint32_t channel, int16_t offset);
+unsigned setSlaveAddr(void);
 /* USER CODE END PFP */
 
@@ -218 +219 @@
   HAL_IWDG_Refresh(&hiwdg);
 
-  if(HAL_GPIO_ReadPin(GPIO_INPUT_BTN_MODE_GPIO_Port, GPIO_INPUT_BTN_MODE_Pin) == GPIO_PIN_RESET)
+  // Set Slave Address via user button
+  unsigned slaveAddr = setSlaveAddr();
+  if (slaveAddr)
+  {
+          sys_data.s.parameter.slave_address = slaveAddr;
+          EEPROM_storeConfig(&sys_data, 0);
+  }
+
+  /*if(HAL_GPIO_ReadPin(GPIO_INPUT_BTN_MODE_GPIO_Port, GPIO_INPUT_BTN_MODE_Pin) == GPIO_PIN_RESET)
   {
     HAL_Delay(50);
@@ -226 +235 @@
       EEPROM_factoryRestore(&sys_data, 1);
     }
-  }
+  }*/
   HAL_IWDG_Refresh(&hiwdg);
   LoadBackupRegister();
@@ -591 +600 @@
 /* USER CODE BEGIN 4 */
 
+unsigned setSlaveAddr(void)
+{
+        const unsigned MAX_PERCENT = 80U;
+        const unsigned SCAN_RATE_MS = 5U;
+        const unsigned MAX_SLAVE_ADDR = 16U;
+
+        uint16_t buff = 0U;
+        unsigned startTime = HAL_GetTick();
+        while (HAL_GetTick() - startTime < 500U)
+        {
+                if (BTN_PRESSED == HAL_GPIO_ReadPin(GPIO_INPUT_BTN_MODE_GPIO_Port, GPIO_INPUT_BTN_MODE_Pin))
+                        buff = (buff << 1U) | 1U;
+                else
+                        buff = (buff << 1U);
+                HAL_Delay(15U);
+        }
+
+        unsigned ones = __builtin_popcount(buff);                                                                       // 1's counter
+        if (ones < (sizeof(buff) * 8U * MAX_PERCENT) / 100U)                                            // if we have 80% of 1 then we assume that a button was pressed for 1 s
+        {
+#ifdef DEBUG
+                printf("Button was NOT kept pressed!\n");
+#endif
+                return 0;
+        }
+
+#ifdef DEBUG
+        printf("Button was kept pressed for a enough time\n");
+#endif
+
+        // Buzzer signalize that we are now in Slave Address Setting mode 
+        startTime = HAL_GetTick();
+        while (HAL_GetTick() - startTime < 300U)
+        {
+                HAL_GPIO_TogglePin(BUZZER_GPIO_Port, BUZZER_Pin);
+                HAL_Delay(20U);
+        }
+        HAL_GPIO_WritePin(BUZZER_GPIO_Port, BUZZER_Pin, BUZZER_OFF);
+
+        // We need to wait till button release(10s)
+        startTime = HAL_GetTick();
+        while (BTN_PRESSED == HAL_GPIO_ReadPin(GPIO_INPUT_BTN_MODE_GPIO_Port, GPIO_INPUT_BTN_MODE_Pin))
+        {
+                if (HAL_GetTick() - startTime >= 60U * 1000U) return 0;
+                HAL_Delay(10U);
+        }
+
+        typedef enum ButtonState
+        {
+                BTN_STATE_NOT_PRESSED,
+                BTN_STATE_PRESSED,
+        } ButtonState_t;
+        ButtonState_t btn_state = BTN_STATE_NOT_PRESSED;
+
+        unsigned slaveAddr = 0;
+        // Waiting for button press about 2min
+        startTime = HAL_GetTick();
+        while (HAL_GetTick() - startTime < 2U * 60U * 1000U)
+        {
+                if (BTN_PRESSED == HAL_GPIO_ReadPin(GPIO_INPUT_BTN_MODE_GPIO_Port, GPIO_INPUT_BTN_MODE_Pin))
+                        buff = (buff << 1U) | 1U;
+                else
+                        buff = (buff << 1U);
+                
+                HAL_Delay(SCAN_RATE_MS);
+
+                switch(btn_state)
+                {
+                        case BTN_STATE_NOT_PRESSED:
+                                if ((buff & UINT16_MAX) == UINT16_MAX)
+                                {       // Button down event is detected
+                                        btn_state = BTN_STATE_PRESSED;
+                                        buff = 0xABCD;
+#ifdef DEBUG
+                                        printf("Key was pressed\n");
+#endif
+                                }
+                                else if (buff == 0)
+                                {
+#ifdef DEBUG
+                                        static unsigned tickStart = 0;
+                                        if (HAL_GetTick() - tickStart >= 1000U)
+                                        {
+                                                tickStart = HAL_GetTick();
+                                                printf("Key is not pressed\n");
+                                        }
+#endif
+                                }
+                                break;
+
+                        case BTN_STATE_PRESSED:
+                                if ((buff & UINT16_MAX) == UINT16_MAX)
+                                {       // Button down event is detected
+                                        btn_state = BTN_STATE_PRESSED;
+                                        buff = 0xBCDE;
+                                        static unsigned pressCnt;
+                                        if (++pressCnt > 2000U / (SCAN_RATE_MS * sizeof(buff) * 8U))// 2s
+                                        {
+                                                pressCnt = 0U;
+
+                                                HAL_GPIO_WritePin(BUZZER_GPIO_Port, BUZZER_Pin, BUZZER_ON);
+                                                HAL_Delay(1000U);
+                                                HAL_GPIO_WritePin(BUZZER_GPIO_Port, BUZZER_Pin, BUZZER_OFF);
+                                                HAL_Delay(200U);
+#ifdef DEBUG
+                                                printf("Key long press was detected\n");
+#endif
+                                                return slaveAddr;
+                                        }
+#ifdef DEBUG
+                                        static unsigned tickStart = 0;
+                                        if (HAL_GetTick() - tickStart >= 250U)
+                                        {
+                                                tickStart = HAL_GetTick();
+                                                printf("Key is kept pressed\n");
+                                        }
+#endif
+                                }
+                                else if (buff == 0)
+                                {
+                                        btn_state = BTN_STATE_NOT_PRESSED;
+                                        ++slaveAddr;
+                                        if (slaveAddr > MAX_SLAVE_ADDR)
+                                        {       // We allow a Slave address to be lower or equal to 16
+                                                for (int i = 0; i < 3; ++i)
+                                                {
+                                                        HAL_GPIO_WritePin(BUZZER_GPIO_Port, BUZZER_Pin, BUZZER_ON);
+                                                        HAL_Delay(400U);
+                                                        HAL_GPIO_WritePin(BUZZER_GPIO_Port, BUZZER_Pin, BUZZER_OFF);
+                                                        HAL_Delay(75U);
+                                                }
+                                                return 0;
+                                        }
+                                        HAL_GPIO_WritePin(BUZZER_GPIO_Port, BUZZER_Pin, BUZZER_ON);
+                                        HAL_Delay(50U);
+                                        HAL_GPIO_WritePin(BUZZER_GPIO_Port, BUZZER_Pin, BUZZER_OFF);
+#ifdef DEBUG
+                                        printf("Key was released\n");
+                                        printf("Slave address = %u\n", slaveAddr);
+#endif
+                                }
+                                break;
+                }
+        }
+
+        return 0;
+}
+
+
 #ifndef NO_USB_SUPPORT 
 void processUSB(ring_buffer_t* const ring_in_buff, ring_buffer_t* const ring_out_buff)