From 49939141cc4fcf4736a55de855416c5ddfc661ea Mon Sep 17 00:00:00 2001
From: Martin Mares <mj@ucw.cz>
Date: Thu, 4 Jul 2019 14:45:47 +0200
Subject: [PATCH] Test: Experimental air temperature readings

---
 test-opencm3/ds18b20.c |  5 +++--
 test-opencm3/test.c    | 20 ++++++++++++++++++++
 2 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/test-opencm3/ds18b20.c b/test-opencm3/ds18b20.c
index 53df2a6..434af43 100644
--- a/test-opencm3/ds18b20.c
+++ b/test-opencm3/ds18b20.c
@@ -18,7 +18,7 @@ static volatile u32 ds_dma_buffer;
 #define DS_DMA DMA1
 #define DS_DMA_CH 6
 
-#define DS_DEBUG
+#undef DS_DEBUG
 #undef DS_DEBUG2
 
 #ifdef DS_DEBUG
@@ -379,8 +379,9 @@ void ds_step(void)
 			if (!maxn--)
 				return;
 			ds_current_id++;
-			if (ds_current_id >= DS_NUM_SENSORS)
+			if (ds_current_id >= DS_NUM_SENSORS) {
 				ds_current_id = 0;
+			}
 		} while (!ds_sensors[ds_current_id].address[0]);
 #endif
 		if (!ds_activate()) {
diff --git a/test-opencm3/test.c b/test-opencm3/test.c
index 309fc75..b765805 100644
--- a/test-opencm3/test.c
+++ b/test-opencm3/test.c
@@ -58,6 +58,20 @@ static void usart_setup(void)
 	usart_enable(USART1);
 }
 
+static void show_temperature(void)
+{
+	debug_putc('#');
+	for (uint i=0; ds_sensors[i].address[0]; i++) {
+		debug_putc(' ');
+		int t = ds_sensors[i].current_temp;
+		if (t == DS_TEMP_UNKNOWN)
+			debug_puts("---.---");
+		else
+			debug_printf("%3d.%03d", t / 1000, t % 1000);
+	}
+	debug_puts("\r\n");
+}
+
 int main(void)
 {
 	clock_setup();
@@ -66,10 +80,16 @@ int main(void)
 	usart_setup();
 
 	ds_init();
+
+	byte cycles = 0;
 	for (;;) {
 		gpio_toggle(GPIOC, GPIO13);
 		delay_ms(100);
 		ds_step();
+		if (cycles++ >= 50) {
+			cycles = 0;
+			show_temperature();
+		}
 	}
 
 	return 0;
-- 
2.39.2