Diff: vfd_gp1059.h

Revision:

0:cd32c44c16f8

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vfd_gp1059.h	Sat Oct 05 22:56:59 2019 +0000
@@ -0,0 +1,155 @@
+/*
+
+VFD Control class for GP1059A01
+
+===============
+GP1059A01 INTERFACE CONNECTION
+---------------
+1  D0   2  D1
+3  D2   4  D3
+5  D4   6  D5
+7  D6   8  D7
+9  GND  10 INT
+11 WR   12 RD
+13 CS   14 C/D
+15 5V   16 5V
+17 5V   18 GND
+19 GND  20 ebb(+70V)
+
+=====================
+mbed CONNECTION
+---------------------
+mbed   GP1059A01(I/O)
+---------------------
+p5     1 (D0)  I/O
+p6     2 (D1)  I/O
+p7     3 (D2)  I/O
+p8     4 (D3)  I/O
+p9     5 (D4)  I/O
+p10    6 (D5)  I/O
+p11    7 (D6)  I/O
+p12    8 (D7)  I/O
+p13    10 (INT) O
+p14    11 (WR)  I
+p15    12 (RD)  I
+p16    13 (CS)  I
+p17    14 (C/D) I
+GND    9,18,19 (GND)
+=====================
+
+*/
+
+#ifndef __VFD_GP1059_H__
+#define __VFD_GP1059_H__
+
+#include "mbed.h"
+
+class VFD_GP1059 {
+private:
+    BusOut data;
+    DigitalOut wr,rd,cs,cd;
+    DigitalIn intr;
+
+    void init(){
+        cs = 1;
+        wr = 1;
+        rd = 1;
+        cd = 1;
+    }
+
+public:
+    // constructor
+    VFD_GP1059(PinName d0_pin,
+               PinName d1_pin,
+               PinName d2_pin,
+               PinName d3_pin,
+               PinName d4_pin,
+               PinName d5_pin,
+               PinName d6_pin,
+               PinName d7_pin,
+               PinName intr_pin,
+               PinName wr_pin,
+               PinName rd_pin,
+               PinName cs_pin,
+               PinName cd_pin) :
+               data(d0_pin, d1_pin, d2_pin, d3_pin, d4_pin, d5_pin, d6_pin, d7_pin),
+               intr(intr_pin),
+               wr(wr_pin),
+               rd(rd_pin),
+               cs(cs_pin),
+               cd(cd_pin) {        
+        init();
+        cls();
+    }
+
+    void send_cmd(uint8_t cmd){
+        cd = 1;       // C/D SET HIGH      
+        data = cmd;   // COMMAND SET
+        cs = 0;       // CS SET LOW
+        wr = 0;       // WR SET LOW
+        wait_us(2);   // wait 2us
+        wr = 1;       // WR SET HIGH
+        cs = 1;       // CS SET HIGH
+        wait_us(4);   // wait 4us
+
+        return;
+    }
+
+    void send_data(uint8_t data_value){
+        cd = 0;       // C/D SET HIGH
+        data = data_value;   // DATA SET
+        cs = 0;       // CS SET LOW
+        wr = 0;       // WR SET LOW
+        wait_us(2);   // wait 2us
+        wr = 1;       // WR SET HIGH
+        cs = 1;       // CS SET HIGH
+        wait_us(4);   // wait 4us
+    
+        return;
+    }
+
+    // Luminance Adjustment (06H)
+    void luminance_adjustment(uint8_t data){
+        send_cmd(6);
+        send_data(data);
+
+        return;
+    }    
+
+    // 04H,05H,02H: Setting address of Write
+    void set_write_read_address(uint16_t address){
+        send_cmd(4);    // 04H: Setting lower address of Write-Read
+        send_data((uint8_t)(address & 0x0ff));    // mask upper address 
+    
+        send_cmd(5);    // 05H: Setting upper address of Write-Read
+        send_data((uint8_t)(address >> 8));       // 8bit shift
+
+        send_cmd(2);    // 02H: Data Write
+    
+        return;
+    }
+
+    // 07H,08H: Setting address display started
+    void set_disp_start_address(uint16_t address){
+        send_cmd(7);    // 07H: Setting lower address display started
+        send_data((uint8_t)(address & 0x0ff));
+    
+        send_cmd(8);    // 08H: Setting upper address display started
+        send_data((uint8_t)(address >> 8));
+    
+        return;
+    }
+    
+    // Clear display memory
+    void cls(){
+        set_disp_start_address(0);
+        set_write_read_address(0);
+        for (int i = 0; i < 0x1fff; i++){
+             send_data(0);
+        }
+    return;
+    }
+
+};
+
+#endif
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