不韋 呂 / UIT_AQM1602

I2C 接続の LCD AQM1602XA-RN-GBW 用のライブラリ． Library for LCD 1602XA-RN-GBW connected using I2C interface.

Dependents:   UIT2_MovingAv_Intr UIT2_VariableFIR UIT2_VowelSynthesizer UIT2_ALE_LeakyLMS ... more

AQM1602.cpp@4:c943f05b7843, 2015-07-06 (annotated)

Committer:
MikamiUitOpen
Date:
Mon Jul 06 08:15:38 2015 +0000
Revision:
4:c943f05b7843
Parent:
3:414f98234c94
Child:
7:5375acc9a74a
5

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:f177013dc4fc 1 //-------------------------------------------------------
MikamiUitOpen 0:f177013dc4fc 2 // Class for LCD, AQM1602XA-RN-GBW
MikamiUitOpen 0:f177013dc4fc 3 //
MikamiUitOpen 4:c943f05b7843 4 // 2015/07/06, Copyright (c) 2015 MIKAMI, Naoki
MikamiUitOpen 0:f177013dc4fc 5 //-------------------------------------------------------
MikamiUitOpen 0:f177013dc4fc 6
MikamiUitOpen 0:f177013dc4fc 7 #include "AQM1602.hpp"
MikamiUitOpen 0:f177013dc4fc 8
MikamiUitOpen 0:f177013dc4fc 9 namespace Mikami
MikamiUitOpen 0:f177013dc4fc 10 {
MikamiUitOpen 0:f177013dc4fc 11 // Constructor
MikamiUitOpen 0:f177013dc4fc 12 Aqm1602::Aqm1602(PinName sda, PinName scl, uint32_t clock,
MikamiUitOpen 0:f177013dc4fc 13 bool cursor, bool blink)
MikamiUitOpen 0:f177013dc4fc 14 : i2c_(sda, scl)
MikamiUitOpen 0:f177013dc4fc 15 {
MikamiUitOpen 0:f177013dc4fc 16 if (clock != 100000) i2c_.frequency(clock);
MikamiUitOpen 0:f177013dc4fc 17
MikamiUitOpen 0:f177013dc4fc 18 wait_ms(40);
MikamiUitOpen 4:c943f05b7843 19 connected_ = Clear(); // Clear display
MikamiUitOpen 4:c943f05b7843 20 WriteCmd(0x39); // To extended command
MikamiUitOpen 3:414f98234c94 21 if (!connected_)
MikamiUitOpen 3:414f98234c94 22 {
MikamiUitOpen 3:414f98234c94 23 fprintf(stderr, "\r\nLCD AQM1602 not connected\r\n");
MikamiUitOpen 3:414f98234c94 24 return;
MikamiUitOpen 3:414f98234c94 25 }
MikamiUitOpen 3:414f98234c94 26
MikamiUitOpen 0:f177013dc4fc 27 WriteCmd(0x14); // Internal OSC frequency
MikamiUitOpen 0:f177013dc4fc 28 WriteCmd(0x70 | 0x00); // Contrast set
MikamiUitOpen 0:f177013dc4fc 29 WriteCmd(0x54 | 0x02); // Power/ICON/Contrast control
MikamiUitOpen 0:f177013dc4fc 30 WriteCmd(0x6C); // Follower control
MikamiUitOpen 0:f177013dc4fc 31 wait_ms(200);
MikamiUitOpen 0:f177013dc4fc 32
MikamiUitOpen 0:f177013dc4fc 33 WriteCmd(0x38); // data length：8-bit, 2-line, 5×8 dots
MikamiUitOpen 0:f177013dc4fc 34 WriteCmd(0x0C | (cursor << 1) | blink);
MikamiUitOpen 0:f177013dc4fc 35 }
MikamiUitOpen 0:f177013dc4fc 36
MikamiUitOpen 0:f177013dc4fc 37 // All clear
MikamiUitOpen 4:c943f05b7843 38 bool Aqm1602::Clear()
MikamiUitOpen 0:f177013dc4fc 39 {
MikamiUitOpen 4:c943f05b7843 40 bool ok = WriteCmd(0x01);
MikamiUitOpen 0:f177013dc4fc 41 wait_ms(50);
MikamiUitOpen 4:c943f05b7843 42 return ok;
MikamiUitOpen 0:f177013dc4fc 43 }
MikamiUitOpen 0:f177013dc4fc 44
MikamiUitOpen 0:f177013dc4fc 45 // Write string
MikamiUitOpen 0:f177013dc4fc 46 void Aqm1602::WriteString(const char str[])
MikamiUitOpen 0:f177013dc4fc 47 {
MikamiUitOpen 0:f177013dc4fc 48 for (int n=0; n<N_CHR; n++)
MikamiUitOpen 0:f177013dc4fc 49 if (str[n] == 0) break;
MikamiUitOpen 0:f177013dc4fc 50 else WriteChar(str[n]);
MikamiUitOpen 0:f177013dc4fc 51 }
MikamiUitOpen 0:f177013dc4fc 52
MikamiUitOpen 0:f177013dc4fc 53 // Write string from specified position
MikamiUitOpen 0:f177013dc4fc 54 void Aqm1602::WriteStringXY(const char str[],
MikamiUitOpen 0:f177013dc4fc 55 uint8_t x, uint8_t y)
MikamiUitOpen 0:f177013dc4fc 56 {
MikamiUitOpen 0:f177013dc4fc 57 SetXY(x, y);
MikamiUitOpen 0:f177013dc4fc 58 WriteString(str);
MikamiUitOpen 0:f177013dc4fc 59 }
MikamiUitOpen 0:f177013dc4fc 60
MikamiUitOpen 0:f177013dc4fc 61 // Clear of specified line
MikamiUitOpen 0:f177013dc4fc 62 void Aqm1602::ClearLine(uint8_t line)
MikamiUitOpen 0:f177013dc4fc 63 {
MikamiUitOpen 0:f177013dc4fc 64 SetXY(0, line);
MikamiUitOpen 0:f177013dc4fc 65 for (int n=0; n<N_CHR; n++)
MikamiUitOpen 0:f177013dc4fc 66 WriteString(" ");
MikamiUitOpen 0:f177013dc4fc 67 }
MikamiUitOpen 0:f177013dc4fc 68
MikamiUitOpen 0:f177013dc4fc 69 // Set contrast
MikamiUitOpen 0:f177013dc4fc 70 void Aqm1602::SetContrast(uint8_t c)
MikamiUitOpen 0:f177013dc4fc 71 {
MikamiUitOpen 0:f177013dc4fc 72 WriteCmd(0x39);
MikamiUitOpen 0:f177013dc4fc 73 WriteCmd(0x70 | (c & 0x0f)); // Lower 4 bits
MikamiUitOpen 0:f177013dc4fc 74 WriteCmd(0x5C | ((c >> 4) & 0x03)); // Higher 2 bits
MikamiUitOpen 0:f177013dc4fc 75 WriteCmd(0x38);
MikamiUitOpen 0:f177013dc4fc 76 }
MikamiUitOpen 0:f177013dc4fc 77
MikamiUitOpen 0:f177013dc4fc 78 //---------------------------------------------------
MikamiUitOpen 0:f177013dc4fc 79 // Following functions: private
MikamiUitOpen 0:f177013dc4fc 80
MikamiUitOpen 0:f177013dc4fc 81 // Send command and data
MikamiUitOpen 3:414f98234c94 82 bool Aqm1602::LcdTx(uint8_t cmdData, uint8_t data)
MikamiUitOpen 0:f177013dc4fc 83 {
MikamiUitOpen 0:f177013dc4fc 84 char tx[2] = { cmdData, data };
MikamiUitOpen 3:414f98234c94 85 int rt = i2c_.write(LCD_ADDRESS_, tx, 2);
MikamiUitOpen 3:414f98234c94 86 return (rt == 0) ? true : false;
MikamiUitOpen 0:f177013dc4fc 87 }
MikamiUitOpen 0:f177013dc4fc 88 }
MikamiUitOpen 0:f177013dc4fc 89