Revision 0:3001ada71ba5, committed 2013-12-21

Comitter:

kayekss

Date:

Sat Dec 21 13:29:11 2013 +0000

Commit message:

First release

Changed in this revision

diff -r 000000000000 -r 3001ada71ba5 HT1621.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HT1621.cpp	Sat Dec 21 13:29:11 2013 +0000
@@ -0,0 +1,57 @@
+#include "mbed.h"
+#include "HT1621.h"
+
+HT1621::HT1621(PinName wrPin, PinName dataPin, PinName csPin)
+:
+    wr(wrPin),
+    data(dataPin),
+    cs(csPin)
+{
+    wr = 1;
+    cs = 1;
+    
+    command(SYS_DIS);
+    wait(0.2);
+    command(SYS_EN);
+    command(RC_256K);
+    command(LCD_OFF);
+    
+    // Clear all segments
+    for (uint8_t i = 0; i < 64; i++) {
+        write(i, 0x00);
+    }
+    command(LCD_ON);
+}
+
+HT1621::~HT1621() {
+}
+
+void HT1621::command(uint8_t b) {
+    // 11 10  9  8| 7  6  5  4| 3  2  1  0
+    // --------+--+-----------+-----------
+    //  1  0  0|              command<8:0>
+    uint16_t word = 0x0800 | (b << 1);
+    
+    cs = 0;
+    for (uint8_t i = 11; i <= 11; i--) {
+        wr = 0;
+        data = word & (0x0001 << i) ? 1 : 0;
+        wr = 1;
+    }
+    cs = 1;
+}
+
+void HT1621::write(uint8_t addr, uint8_t b) {
+    // 12|11 10  9  8| 7  6  5  4| 3  2  1  0
+    // --+-----+-----+-----------+-----------
+    //  1  0  1|     address<5:0>|   seg<3:0>
+    uint16_t word = 0x1400 | ((addr & 0x3f) << 4) | (b & 0x0f);
+    
+    cs = 0;
+    for (uint8_t i = 12; i <= 12; i--) {
+        wr = 0;
+        data = word & (0x0001 << i) ? 1 : 0;
+        wr = 1;
+    }
+    cs = 1;
+}

diff -r 000000000000 -r 3001ada71ba5 HT1621.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HT1621.h	Sat Dec 21 13:29:11 2013 +0000
@@ -0,0 +1,55 @@
+#ifndef HT1621_H_
+#define HT1621_H_
+
+class HT1621 {
+private:
+    DigitalOut wr;
+    DigitalOut data;
+    DigitalOut cs;
+    
+public:
+    // Commands
+    const static uint8_t SYS_DIS     = 0x00;
+    const static uint8_t SYS_EN      = 0x01;
+    const static uint8_t LCD_OFF     = 0x02;
+    const static uint8_t LCD_ON      = 0x03;
+    const static uint8_t TIMER_DIS   = 0x04;
+    const static uint8_t WDT_DIS     = 0x05;
+    const static uint8_t TIMER_EN    = 0x06;
+    const static uint8_t WDT_EN      = 0x07;
+    const static uint8_t TONE_OFF    = 0x08;
+    const static uint8_t TONE_ON     = 0x09;
+    const static uint8_t CLR_TIMER   = 0xc0;
+    const static uint8_t CLR_WDT     = 0xe0;
+    const static uint8_t XTAL_32K    = 0x14;
+    const static uint8_t RC_256K     = 0x18;
+    const static uint8_t EXT_256K    = 0x1c;
+    const static uint8_t BIAS2_COM2  = 0x20;
+    const static uint8_t BIAS3_COM2  = 0x21;
+    const static uint8_t BIAS2_COM3  = 0x24;
+    const static uint8_t BIAS3_COM3  = 0x25;
+    const static uint8_t BIAS2_COM4  = 0x28;
+    const static uint8_t BIAS3_COM4  = 0x29;
+    const static uint8_t TONE_4K     = 0x40;
+    const static uint8_t TONE_2K     = 0x60;
+    const static uint8_t IRQ_DIS     = 0x80;
+    const static uint8_t IRQ_EN      = 0x88;
+    const static uint8_t F1          = 0xa0;
+    const static uint8_t F2          = 0xa1;
+    const static uint8_t F4          = 0xa2;
+    const static uint8_t F8          = 0xa3;
+    const static uint8_t F16         = 0xa4;
+    const static uint8_t F32         = 0xa5;
+    const static uint8_t F64         = 0xa6;
+    const static uint8_t F128        = 0xa7;
+    const static uint8_t TEST        = 0xe0;
+    const static uint8_t NORMAL      = 0xe3;
+    
+    HT1621(PinName wrPin, PinName dataPin, PinName csPin);
+    ~HT1621();
+    
+    void write(uint8_t addr, uint8_t b);
+    void command(uint8_t b);
+};
+
+#endif