update firmware

Core/Src/main.c

@@ -24,7 +24,7 @@
 
 /* Private includes ----------------------------------------------------------*/
 /* USER CODE BEGIN Includes */
-
+#include <stdio.h>
 /* USER CODE END Includes */
 
 /* Private typedef -----------------------------------------------------------*/
@@ -45,7 +45,17 @@
 /* Private variables ---------------------------------------------------------*/
 
 /* USER CODE BEGIN PV */
+#define LED_MASK      0x01FFu     /* PC0..PC8 */
+#define N_POINTS      9
+#define COUNT_MIN     1
+#define COUNT_MAX     15
+#define TICKS_BURST   30          /* 15회 x 2틱 = 6.0 s */
+#define TICKS_IDLE    10          /* 2.0 s */
+#define TICKS_CYCLE   (TICKS_BURST + TICKS_IDLE)
 
+static uint16_t tick   = 0;
+static uint16_t cycle  = 0;
+static uint8_t  cnt[N_POINTS];    /* 지점별 목표 블링크 횟수 */
 /* USER CODE END PV */
 
 /* Private function prototypes -----------------------------------------------*/
@@ -56,7 +66,27 @@ void SystemClock_Config(void);
 
 /* Private user code ---------------------------------------------------------*/
 /* USER CODE BEGIN 0 */
+/* printf -> USART2 (ST-LINK VCP) */
+int __io_putchar(int ch)
+{
+  HAL_UART_Transmit(&huart2, (uint8_t *)&ch, 1, HAL_MAX_DELAY);
+  return ch;
+}
 
+/* 결정적 회전 패턴: 지점마다 다른 값, 사이클마다 1씩 이동 */
+static void load_counts(void)
+{
+  for (uint8_t k = 0; k < N_POINTS; k++) {
+    cnt[k] = (uint8_t)(((cycle + k) % COUNT_MAX) + COUNT_MIN);
+  }
+}
+
+static void drive(uint16_t bits)
+{
+  /* 오픈 드레인: 0 = 점등이므로 반전. 9핀 원자적 동시 전환 */
+  GPIOC->BSRR = ((uint32_t)( bits & LED_MASK) << 16)
+              | ((uint32_t)(~bits & LED_MASK));
+}
 /* USER CODE END 0 */
 
 /**
@@ -91,7 +121,9 @@ int main(void)
   MX_TIM6_Init();
   MX_USART2_UART_Init();
   /* USER CODE BEGIN 2 */
-
+  load_counts();
+  drive(0);                       /* 전 지점 소등 */
+  HAL_TIM_Base_Start_IT(&htim6);
   /* USER CODE END 2 */
 
   /* Infinite loop */
@@ -153,7 +185,33 @@ void SystemClock_Config(void)
 }
 
 /* USER CODE BEGIN 4 */
+void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
+{
+  if (htim->Instance != TIM6) return;
 
+  uint16_t bits = 0;
+
+  /* 버스트 구간의 짝수 틱에서만 점등.
+     지점 k의 j번째 블링크는 틱 2j(점등) / 2j+1(소등)을 점유 */
+  if (tick < TICKS_BURST && (tick & 1u) == 0u) {
+    for (uint8_t k = 0; k < N_POINTS; k++) {
+      if (tick < (uint16_t)cnt[k] * 2u) {
+        bits |= (uint16_t)(1u << k);
+      }
+    }
+  }
+  drive(bits);
+
+  if (++tick >= TICKS_CYCLE) {
+    tick = 0;
+    cycle++;
+    load_counts();
+
+    printf("CYCLE=%u G:", cycle);
+    for (uint8_t k = 0; k < N_POINTS; k++) printf(" %2u", cnt[k]);
+    printf("\r\n");
+  }
+}
 /* USER CODE END 4 */
 
 /**