From 3028595801878f962bd362421ed3ec5af635ff45 Mon Sep 17 00:00:00 2001
From: root <root@ka-ata-killa.panaceas.james.local>
Date: Sun, 21 Nov 2021 18:48:00 +0000
Subject: add blinken lights

---
 stm32/app/Makefile     |  2 +-
 stm32/app/board.h      |  4 +--
 stm32/app/leds.c       | 98 ++++++++++++++++++++++++++++++++++++++++++++++++++
 stm32/app/main.c       |  3 +-
 stm32/app/prototypes.h |  4 ++-
 stm32/app/rtc.c        |  2 +-
 stm32/app/ticker.c     | 10 +-----
 7 files changed, 107 insertions(+), 16 deletions(-)
 create mode 100644 stm32/app/leds.c

diff --git a/stm32/app/Makefile b/stm32/app/Makefile
index 997011f..62a13cc 100644
--- a/stm32/app/Makefile
+++ b/stm32/app/Makefile
@@ -25,7 +25,7 @@ LDLIBS+=-lm
 V=1
 default: ${PROG}.elf
 
-CSRCS= main.c cdcacm.c dfu.c ring.c usart.c ticker.c dummy_kb.c usb.c rtc.c time_fn.c events.c hands.c motor.c
+CSRCS= main.c cdcacm.c dfu.c ring.c usart.c ticker.c dummy_kb.c usb.c rtc.c time_fn.c events.c hands.c motor.c leds.c
 HSRCS = project.h
 
 
diff --git a/stm32/app/board.h b/stm32/app/board.h
index 41eeafc..29d465d 100644
--- a/stm32/app/board.h
+++ b/stm32/app/board.h
@@ -1,8 +1,8 @@
 
-#define LED1      GPIO8
+#define LED1      GPIO9
 #define LED1_PORT GPIOB
 
-#define LED2      GPIO9
+#define LED2      GPIO8
 #define LED2_PORT GPIOB
 
 
diff --git a/stm32/app/leds.c b/stm32/app/leds.c
new file mode 100644
index 0000000..bcac9b6
--- /dev/null
+++ b/stm32/app/leds.c
@@ -0,0 +1,98 @@
+#include "project.h"
+
+
+#define FLASH 100
+
+static unsigned  led1 = FLASH, led2 = FLASH;
+
+
+static void metric_pll (void)
+{
+  static uint32_t last;
+  static int which;
+  static unsigned ttg;
+  EPOCH e;
+  uint64_t v;
+
+  if ((ticks - last) < ttg)  return;
+
+  e = rtc_get();
+
+  if (which) {
+    led2 = FLASH;
+    CLEAR (LED2);
+  } else {
+    led1 = FLASH;
+    CLEAR (LED1);
+  }
+
+  last = ticks;
+
+  which = !which;
+
+
+  v = e.s;
+  v %= 86400;
+  v *= 1000;
+  v += e.ns / 1000000;
+
+  v %= 864;
+
+  //  printf("M:               %5u %9u\r\n",(unsigned) v, (unsigned ) (e.ns/1000000));
+
+  ttg = 864 - (unsigned)v;
+}
+
+static void customary_pll (void)
+{
+  static uint32_t last;
+  static unsigned ttg;
+  EPOCH e;
+  uint64_t v;
+
+  if ((ticks - last) < ttg)  return;
+
+  e = rtc_get();
+
+  led2 = FLASH;
+  CLEAR (LED2);
+
+  last = ticks;
+
+  v = e.ns / 1000000;
+  v %= 864;
+
+  ttg = 1000 - (unsigned)v;
+
+  //  printf("C: %9u\r\n",(unsigned ) (e.ns/1000000));
+}
+
+
+
+void led_tick (void)
+{
+
+  if (led1) {
+    CLEAR (LED1);
+    led1--;
+  } else  SET (LED1);
+
+
+  if (led2) {
+    CLEAR (LED2);
+    led2--;
+  } else  SET (LED2);
+
+
+  if (!rtc_ready) return;
+
+  metric_pll();
+  //  customary_pll();
+}
+
+
+void leds_init (void)
+{
+  MAP_OUTPUT_OD (LED1);
+  MAP_OUTPUT_OD (LED2);
+}
diff --git a/stm32/app/main.c b/stm32/app/main.c
index 4722479..344a106 100644
--- a/stm32/app/main.c
+++ b/stm32/app/main.c
@@ -27,13 +27,12 @@ int main (void)
   nvic_set_priority (NVIC_USB_LP_CAN_RX0_IRQ, 0x40);
   nvic_set_priority (NVIC_RTC_IRQ, 0x10);
 
-  MAP_OUTPUT_OD (LED1);
-  MAP_OUTPUT_OD (LED2);
 
 
   usart_init();
   cdcacm_rings_init();
   rtc_init();
+  leds_init();
 
   printf ("Startup:\r\n");
 
diff --git a/stm32/app/prototypes.h b/stm32/app/prototypes.h
index 751ba25..18106bc 100644
--- a/stm32/app/prototypes.h
+++ b/stm32/app/prototypes.h
@@ -31,7 +31,6 @@ extern int _write(int file, char *ptr, int len);
 extern void usart_init(void);
 /* ticker.c */
 extern volatile uint32_t ticks;
-extern unsigned led2;
 extern void delay_us(uint32_t d);
 extern void sys_tick_handler(void);
 extern void ticker_init(void);
@@ -79,3 +78,6 @@ extern void hands_tick(void);
 /* motor.c */
 extern void motor_tick(void);
 extern void motor_init(void);
+/* leds.c */
+extern void led_tick(void);
+extern void leds_init(void);
diff --git a/stm32/app/rtc.c b/stm32/app/rtc.c
index 0030cfd..9c1bc47 100644
--- a/stm32/app/rtc.c
+++ b/stm32/app/rtc.c
@@ -77,7 +77,7 @@ void rtc_isr (void)
 
   v = rtc_get_counter_val();
 
-  TOGGLE (LED1);
+  //  TOGGLE (LED1);
 
   cycle_ref = now;
 
diff --git a/stm32/app/ticker.c b/stm32/app/ticker.c
index f124307..f89d855 100644
--- a/stm32/app/ticker.c
+++ b/stm32/app/ticker.c
@@ -4,7 +4,6 @@
 volatile uint32_t ticks;
 static uint32_t scale = 7;
 
-unsigned  led2 = 1000;
 
 
 
@@ -25,14 +24,7 @@ sys_tick_handler (void)
   hands_tick();
   motor_tick();
 
-  if (led2)
-    led2--;
-
-  if (led2)
-    CLEAR (LED2);
-
-  else
-    SET (LED2);
+  led_tick();
 }
 
 void
-- 
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