From: vl_garistov <vl_garistov@gmail.com>
Date: Tue, 9 Feb 2021 21:50:13 +0000 (+0200)
Subject: Added 2 7-segment display examples - raw and with shield
X-Git-Url: https://kolegite.com/gitweb/?a=commitdiff_plain;h=1f821d44bee6f3983f52ac34681b60f1e3ff7a91;p=vmks.git

Added 2 7-segment display examples - raw and with shield
---

diff --git a/Examples/7-segm_raw/7-segm_raw.ino b/Examples/7-segm_raw/7-segm_raw.ino
new file mode 100644
index 0000000..28913f8
--- /dev/null
+++ b/Examples/7-segm_raw/7-segm_raw.ino
@@ -0,0 +1,77 @@
+#define A_PIN	8
+#define B_PIN	9
+#define C_PIN	3
+#define D_PIN	4
+#define E_PIN	5
+#define F_PIN	7
+#define G_PIN	6
+#define DP_PIN	2
+
+int print_digit(uint8_t digit);
+
+const uint8_t pins[8] = {A_PIN, B_PIN, C_PIN, D_PIN, E_PIN, F_PIN, G_PIN, DP_PIN};
+
+const uint8_t segment_map[16] =
+{
+	// A B C D E F G DP
+    0b00000011,	// 0
+    0b10011111,	// 1
+    0b00100101,	// 2
+    0b00001101,	// 3
+	0b10011001,	// 4
+	0b01001001,	// 5
+	0b01000001,	// 6
+	0b00011111,	// 7
+	0b00000001,	// 8
+	0b00001001,	// 9
+	0b00010001,	// A
+	0b11000001,	// b
+	0b01100011,	// C
+	0b10000101,	// d
+	0b01100001,	// E
+	0b01110001	// F
+};
+
+void setup()
+{
+	pinMode(A_PIN, OUTPUT);
+	pinMode(B_PIN, OUTPUT);
+	pinMode(C_PIN, OUTPUT);
+	pinMode(D_PIN, OUTPUT);
+	pinMode(E_PIN, OUTPUT);
+    pinMode(F_PIN, OUTPUT);
+    pinMode(G_PIN, OUTPUT);
+    pinMode(DP_PIN, OUTPUT);
+    digitalWrite(A_PIN, HIGH);
+    digitalWrite(B_PIN, HIGH);
+    digitalWrite(C_PIN, HIGH);
+    digitalWrite(D_PIN, HIGH);
+    digitalWrite(E_PIN, HIGH);
+    digitalWrite(F_PIN, HIGH);
+    digitalWrite(G_PIN, HIGH);
+    digitalWrite(DP_PIN, HIGH);
+}
+
+void loop()
+{
+	for (uint8_t cnt = 0; cnt < 16; cnt++)
+    {
+    	print_digit(cnt);
+      	delay(1000);
+    }
+}
+
+int print_digit(uint8_t digit)
+{
+    if (digit > 15)
+    {
+		return -1;
+	}
+
+  	for (uint8_t i = 0; i < 8; i++)
+    {
+		digitalWrite(pins[i], segment_map[digit] & (128 >> i));
+	}
+  
+	return 0;
+}
diff --git a/Examples/7-segm_raw/7-segm_raw.png b/Examples/7-segm_raw/7-segm_raw.png
new file mode 100644
index 0000000..65c056b
Binary files /dev/null and b/Examples/7-segm_raw/7-segm_raw.png differ
diff --git a/Examples/7-segm_shield/7-segm_shield.ino b/Examples/7-segm_shield/7-segm_shield.ino
new file mode 100644
index 0000000..e9b8b02
--- /dev/null
+++ b/Examples/7-segm_shield/7-segm_shield.ino
@@ -0,0 +1,44 @@
+#define LATCH_PIN 4
+#define CLK_PIN   7
+#define SDI_PIN   8
+
+int print_digit(uint8_t segment, uint8_t value);
+
+// Segment map to select number 0 to F
+const uint8_t SEGMENT_MAP[16] = {0xC0, 0xF9, 0xA4, 0xB0, 0x99, 0x92, 0x82, 0xF8, 0x80, 0x90, 0x88, 0x83, 0xC6, 0xA1, 0x86, 0x8E};
+// Byte map to select digit 0 to 3
+const uint8_t SEGMENT_SELECT[4] = {0xF1, 0xF2, 0xF4, 0xF8};
+
+void setup()
+{
+  pinMode(LATCH_PIN, OUTPUT);
+  pinMode(CLK_PIN, OUTPUT);
+  pinMode(SDI_PIN, OUTPUT);
+  digitalWrite(LATCH_PIN, LOW);
+  digitalWrite(CLK_PIN, LOW);
+  digitalWrite(SDI_PIN, LOW);
+}
+
+void loop()
+{
+  print_digit(0, 5);
+  print_digit(1, 6);
+  print_digit(2, 7);
+  print_digit(3, 9);
+}
+
+/* Write a decimal number between 0 and 9 to one of the 4 digits of the display */
+int print_digit(uint8_t segment, uint8_t value)
+{
+  if (value > 15 || segment > 3)
+  {
+    return -1;
+  }
+  
+  shiftOut(SDI_PIN, CLK_PIN, MSBFIRST, SEGMENT_MAP[value]);
+  shiftOut(SDI_PIN, CLK_PIN, MSBFIRST, SEGMENT_SELECT[segment] );
+  digitalWrite(LATCH_PIN, HIGH);
+  digitalWrite(LATCH_PIN, LOW);
+
+  return 0;
+}
diff --git a/Pinouts/7-segment-display-pinout-cc-ca-1024x833.png b/Pinouts/7-segment-display-pinout-cc-ca-1024x833.png
new file mode 100644
index 0000000..04295fd
Binary files /dev/null and b/Pinouts/7-segment-display-pinout-cc-ca-1024x833.png differ