From: Martin Mares <mj@ucw.cz>
Date: Sun, 3 May 2020 09:17:37 +0000 (+0200)
Subject: Display test: more hacks
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;h=f082d912aefd2d394b0c84eb12c2fd98afb30bda;p=home-hw.git

Display test: more hacks
---

diff --git a/test-display/main.c b/test-display/main.c
index ade3d3b..11b09f3 100644
--- a/test-display/main.c
+++ b/test-display/main.c
@@ -118,13 +118,15 @@ static void display_init(void)
 {
 	debug_puts("I2C init\n");
 	i2c_peripheral_disable(I2C1);
-        i2c_set_speed(I2C1, i2c_speed_sm_100k, CPU_CLOCK_MHZ);
+        i2c_set_speed(I2C1, i2c_speed_sm_100k, rcc_apb1_frequency / 1000000);
         i2c_peripheral_enable(I2C1);
 
 	debug_puts("I2C transfer\n");
 
-	// byte disp[] = { 0x7f, 0x12, 0xb6, 0xd2 };
-	byte disp[] = { 0xff, 0xff, 0xff, 0xff };
+	// byte disp[] = { 0xb6, 0xb6, 0xb6, 0xb6 };
+	// byte disp[] = { 0x7f, 0x12, 0xbc, 0xb6 };
+	// byte disp[] = { 0xff, 0xff, 0xff, 0xff };
+	byte disp[] = { 0x80, 0x80, 0x80, 0xff };
 	byte cmds[] = { 0x00, 0x47, 0, 0, 0, 0 };
 	cmds[2] = (disp[0] & 0xf0) | (disp[2] >> 4);
 	cmds[3] = (disp[1] & 0xf0) | (disp[3] >> 4);
@@ -135,6 +137,16 @@ static void display_init(void)
 	debug_puts("I2C done\n");
 }
 
+static void display_test(void)
+{
+	static byte mode;
+
+	byte cmds[] = { 0x00, mode ? 0x77 : 0x77 };
+	i2c_transfer7(I2C1, 0x70/2, (byte *) cmds, sizeof(cmds), NULL, 0);
+
+	mode = !mode;
+}
+
 /*** USB ***/
 
 static usbd_device *usbd_dev;
@@ -345,6 +357,7 @@ int main(void)
 		if (ms_ticks - last_blink >= 100) {
 			debug_led_toggle();
 			last_blink = ms_ticks;
+			display_test();
 		}
 
 		if (usb_event_pending) {