Revision 0:43feb8b53696, committed 2013-11-08

Comitter:

yihui

Date:

Fri Nov 08 06:51:49 2013 +0000

Commit message:

LED matrix display using http://goo.gl/y6VnO6.

Changed in this revision

diff -r 000000000000 -r 43feb8b53696 LEDMatrix.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LEDMatrix.lib	Fri Nov 08 06:51:49 2013 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/yihui/code/LEDMatrix/#13728deac7a7

diff -r 000000000000 -r 43feb8b53696 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Nov 08 06:51:49 2013 +0000
@@ -0,0 +1,94 @@
+/**
+ * LED Matrix library for http://www.seeedstudio.com/depot/ultrathin-16x32-red-led-matrix-panel-p-1582.html
+ * The LED Matrix panel has 32x16 pixels. Several panel can be combined together as a large screen.
+ *
+ * Coordinate & Connection (mbed -> panel 0 -> panel 1 -> ...)
+ *   (0, 0)                                     (0, 0)
+ *     +--------+--------+--------+               +--------+--------+
+ *     |   5    |    3   |    1   |               |    1   |    0   |
+ *     |        |        |        |               |        |        |<----- mbed
+ *     +--------+--------+--------+               +--------+--------+
+ *     |   4    |    2   |    0   |                              (64, 16)
+ *     |        |        |        |<----- mbed
+ *     +--------+--------+--------+
+ *                             (96, 32)
+ *
+ */
+
+#include "mbed.h"
+#include "LEDMatrix.h"
+
+#define WIDTH   64
+#define HEIGHT  16
+
+BusOut leds(LED1, LED2, LED3, LED4);
+
+// LEDMatrix(a, b, c, d, oe, r1, stb, clk);
+LEDMatrix matrix(P1_18, P1_24, P1_25, P1_5, P1_26, P1_27, P0_2, P1_29);
+Ticker scanner;
+
+// Display Buffer 128 = 64 * 16 / 8
+uint8_t displaybuf[WIDTH *HEIGHT / 8] = {
+    0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x01, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 0x01, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x60,
+    0x01, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 0x00, 0xE0, 0x07, 0x8F, 0xC7, 0xC7, 0xC7, 0xE0,
+    0x00, 0x40, 0x0C, 0xCE, 0x6C, 0x6C, 0x6C, 0xE0, 0x00, 0xE0, 0x0C, 0x0C, 0x6C, 0x6C, 0x6C, 0x60,
+    0x01, 0xF0, 0x07, 0x8C, 0x6F, 0xEF, 0xEC, 0x60, 0x23, 0xF8, 0x00, 0xCC, 0x6C, 0x0C, 0x0C, 0x60,
+    0x33, 0xF8, 0x0C, 0xCE, 0x6C, 0x6C, 0x6C, 0xE0, 0x3B, 0xF8, 0x07, 0x8F, 0xC7, 0xC7, 0xC7, 0xE0,
+    0x3B, 0xF8, 0x00, 0x0C, 0x00, 0x00, 0x00, 0x00, 0x1B, 0xF8, 0x00, 0x0C, 0x00, 0x00, 0x00, 0x00,
+    0x0B, 0xF8, 0x00, 0x0C, 0x00, 0x00, 0x00, 0x00, 0x07, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+};
+
+// 16 * 8 digital font
+const uint8_t digitals[] = {
+    0x00, 0x1C, 0x36, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x36, 0x1C, 0x00, 0x00, 0x00, 0x00, // 0
+    0x00, 0x18, 0x78, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x7E, 0x00, 0x00, 0x00, 0x00, // 1
+    0x00, 0x3E, 0x63, 0x63, 0x63, 0x06, 0x06, 0x0C, 0x18, 0x30, 0x63, 0x7F, 0x00, 0x00, 0x00, 0x00, // 2
+    0x00, 0x3E, 0x63, 0x63, 0x06, 0x1C, 0x06, 0x03, 0x03, 0x63, 0x66, 0x3C, 0x00, 0x00, 0x00, 0x00, // 3
+    0x00, 0x06, 0x0E, 0x1E, 0x36, 0x36, 0x66, 0x66, 0x7F, 0x06, 0x06, 0x1F, 0x00, 0x00, 0x00, 0x00, // 4
+    0x00, 0x7F, 0x60, 0x60, 0x60, 0x7C, 0x76, 0x03, 0x03, 0x63, 0x66, 0x3C, 0x00, 0x00, 0x00, 0x00, // 5
+    0x00, 0x1E, 0x36, 0x60, 0x60, 0x7C, 0x76, 0x63, 0x63, 0x63, 0x36, 0x1C, 0x00, 0x00, 0x00, 0x00, // 6
+    0x00, 0x7F, 0x66, 0x66, 0x0C, 0x0C, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x00, 0x00, 0x00, 0x00, // 7
+    0x00, 0x3E, 0x63, 0x63, 0x63, 0x36, 0x1C, 0x36, 0x63, 0x63, 0x63, 0x3E, 0x00, 0x00, 0x00, 0x00, // 8
+    0x00, 0x1C, 0x36, 0x63, 0x63, 0x63, 0x37, 0x1F, 0x03, 0x03, 0x36, 0x3C, 0x00, 0x00, 0x00, 0x00, // 9
+};
+
+// (x, y) top-left position, x should be multiple of 8
+void drawDigital(uint16_t x, uint16_t y, uint8_t n)
+{
+    if ((n >= 10) || (0 != (x % 8))) {
+        return;
+    }
+
+    uint8_t *pDst = displaybuf + y * (WIDTH / 8) + x / 8;
+    const uint8_t *pSrc = digitals + n * 16;
+    for (uint8_t i = 0; i < 16; i++) {
+        *pDst = *pSrc;
+        pDst += WIDTH / 8;
+        pSrc++;
+    }
+}
+
+
+void scan()
+{
+    matrix.scan();
+}
+
+int main() {
+    matrix.begin(displaybuf, WIDTH, HEIGHT);
+    scanner.attach(scan, 0.001);
+    
+    wait(3);
+    matrix.clear();
+    
+    uint8_t count = 0;
+    while(1) {
+        drawDigital(40, 0, count);
+        
+        leds = ~count;
+        wait(1);
+        count = (count + 1) & 0x7;
+        
+    }
+}

diff -r 000000000000 -r 43feb8b53696 mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Fri Nov 08 06:51:49 2013 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/a9913a65894f
\ No newline at end of file