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@8:854c244a7863, 2016-01-14 (annotated)

Committer:
MikamiUitOpen
Date:
Thu Jan 14 05:55:06 2016 +0000
Revision:
8:854c244a7863
Parent:
7:5375acc9a74a
Child:
9:74a845df6e7a
9

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 7:5375acc9a74a 3 // Do not use mbed Rev.109, using Nucleo-F401/441
MikamiUitOpen 0:f177013dc4fc 4 //
MikamiUitOpen 8:854c244a7863 5 // 2016/01/14, Copyright (c) 2015 MIKAMI, Naoki
MikamiUitOpen 0:f177013dc4fc 6 //-------------------------------------------------------
MikamiUitOpen 0:f177013dc4fc 7
MikamiUitOpen 0:f177013dc4fc 8 #include "AQM1602.hpp"
MikamiUitOpen 0:f177013dc4fc 9
MikamiUitOpen 0:f177013dc4fc 10 namespace Mikami
MikamiUitOpen 0:f177013dc4fc 11 {
MikamiUitOpen 0:f177013dc4fc 12 // Constructor
MikamiUitOpen 0:f177013dc4fc 13 Aqm1602::Aqm1602(PinName sda, PinName scl, uint32_t clock,
MikamiUitOpen 0:f177013dc4fc 14 bool cursor, bool blink)
MikamiUitOpen 8:854c244a7863 15 : i2cPtr_(new I2C(sda, scl)), i2c_(*i2cPtr_)
MikamiUitOpen 8:854c244a7863 16 { Init(clock, cursor, blink); }
MikamiUitOpen 0:f177013dc4fc 17
MikamiUitOpen 8:854c244a7863 18 Aqm1602::Aqm1602(I2C &i2c, uint32_t clock,
MikamiUitOpen 8:854c244a7863 19 bool cursor, bool blink)
MikamiUitOpen 8:854c244a7863 20 : i2cPtr_(NULL), i2c_(i2c)
MikamiUitOpen 8:854c244a7863 21 { Init(clock, cursor, blink); }
MikamiUitOpen 0:f177013dc4fc 22
MikamiUitOpen 0:f177013dc4fc 23 // All clear
MikamiUitOpen 8:854c244a7863 24 bool Aqm1602::Clear()
MikamiUitOpen 0:f177013dc4fc 25 {
MikamiUitOpen 8:854c244a7863 26 bool ok = WriteCmd(0x01);
MikamiUitOpen 8:854c244a7863 27 wait_ms(50);
MikamiUitOpen 8:854c244a7863 28 return ok;
MikamiUitOpen 0:f177013dc4fc 29 }
MikamiUitOpen 0:f177013dc4fc 30
MikamiUitOpen 0:f177013dc4fc 31 // Write string
MikamiUitOpen 0:f177013dc4fc 32 void Aqm1602::WriteString(const char str[])
MikamiUitOpen 0:f177013dc4fc 33 {
MikamiUitOpen 0:f177013dc4fc 34 for (int n=0; n<N_CHR; n++)
MikamiUitOpen 0:f177013dc4fc 35 if (str[n] == 0) break;
MikamiUitOpen 0:f177013dc4fc 36 else WriteChar(str[n]);
MikamiUitOpen 0:f177013dc4fc 37 }
MikamiUitOpen 0:f177013dc4fc 38
MikamiUitOpen 0:f177013dc4fc 39 // Write string from specified position
MikamiUitOpen 0:f177013dc4fc 40 void Aqm1602::WriteStringXY(const char str[],
MikamiUitOpen 0:f177013dc4fc 41 uint8_t x, uint8_t y)
MikamiUitOpen 0:f177013dc4fc 42 {
MikamiUitOpen 0:f177013dc4fc 43 SetXY(x, y);
MikamiUitOpen 0:f177013dc4fc 44 WriteString(str);
MikamiUitOpen 0:f177013dc4fc 45 }
MikamiUitOpen 0:f177013dc4fc 46
MikamiUitOpen 0:f177013dc4fc 47 // Clear of specified line
MikamiUitOpen 0:f177013dc4fc 48 void Aqm1602::ClearLine(uint8_t line)
MikamiUitOpen 0:f177013dc4fc 49 {
MikamiUitOpen 0:f177013dc4fc 50 SetXY(0, line);
MikamiUitOpen 0:f177013dc4fc 51 for (int n=0; n<N_CHR; n++)
MikamiUitOpen 0:f177013dc4fc 52 WriteString(" ");
MikamiUitOpen 0:f177013dc4fc 53 }
MikamiUitOpen 0:f177013dc4fc 54
MikamiUitOpen 0:f177013dc4fc 55 // Set contrast
MikamiUitOpen 0:f177013dc4fc 56 void Aqm1602::SetContrast(uint8_t c)
MikamiUitOpen 0:f177013dc4fc 57 {
MikamiUitOpen 0:f177013dc4fc 58 WriteCmd(0x39);
MikamiUitOpen 0:f177013dc4fc 59 WriteCmd(0x70 | (c & 0x0f)); // Lower 4 bits
MikamiUitOpen 0:f177013dc4fc 60 WriteCmd(0x5C | ((c >> 4) & 0x03)); // Higher 2 bits
MikamiUitOpen 0:f177013dc4fc 61 WriteCmd(0x38);
MikamiUitOpen 0:f177013dc4fc 62 }
MikamiUitOpen 0:f177013dc4fc 63
MikamiUitOpen 0:f177013dc4fc 64 //---------------------------------------------------
MikamiUitOpen 0:f177013dc4fc 65 // Following functions: private
MikamiUitOpen 0:f177013dc4fc 66
MikamiUitOpen 8:854c244a7863 67 // Initialize
MikamiUitOpen 8:854c244a7863 68 void Aqm1602::Init(uint32_t clock, bool cursor, bool blink)
MikamiUitOpen 8:854c244a7863 69 {
MikamiUitOpen 8:854c244a7863 70 if (clock != 100000) i2c_.frequency(clock);
MikamiUitOpen 8:854c244a7863 71
MikamiUitOpen 8:854c244a7863 72 wait_ms(40);
MikamiUitOpen 8:854c244a7863 73 connected_ = Clear(); // Clear display
MikamiUitOpen 8:854c244a7863 74 if (!connected_)
MikamiUitOpen 8:854c244a7863 75 {
MikamiUitOpen 8:854c244a7863 76 fprintf(stderr, "\r\nLCD AQM1602 not connected\r\n");
MikamiUitOpen 8:854c244a7863 77 return;
MikamiUitOpen 8:854c244a7863 78 }
MikamiUitOpen 8:854c244a7863 79
MikamiUitOpen 8:854c244a7863 80 WriteCmd(0x39); // To extended command
MikamiUitOpen 8:854c244a7863 81 WriteCmd(0x14); // Internal OSC frequency
MikamiUitOpen 8:854c244a7863 82 WriteCmd(0x70 | 0x00); // Contrast set
MikamiUitOpen 8:854c244a7863 83 WriteCmd(0x54 | 0x02); // Power/ICON/Contrast control
MikamiUitOpen 8:854c244a7863 84 WriteCmd(0x6C); // Follower control
MikamiUitOpen 8:854c244a7863 85 wait_ms(200);
MikamiUitOpen 8:854c244a7863 86
MikamiUitOpen 8:854c244a7863 87 WriteCmd(0x38); // data length：8-bit, 2-line, 5×8 dots
MikamiUitOpen 8:854c244a7863 88 WriteCmd(0x0C | (cursor << 1) | blink);
MikamiUitOpen 8:854c244a7863 89 }
MikamiUitOpen 8:854c244a7863 90
MikamiUitOpen 0:f177013dc4fc 91 // Send command and data
MikamiUitOpen 3:414f98234c94 92 bool Aqm1602::LcdTx(uint8_t cmdData, uint8_t data)
MikamiUitOpen 0:f177013dc4fc 93 {
MikamiUitOpen 0:f177013dc4fc 94 char tx[2] = { cmdData, data };
MikamiUitOpen 3:414f98234c94 95 int rt = i2c_.write(LCD_ADDRESS_, tx, 2);
MikamiUitOpen 7:5375acc9a74a 96 wait_us(30);
MikamiUitOpen 3:414f98234c94 97 return (rt == 0) ? true : false;
MikamiUitOpen 0:f177013dc4fc 98 }
MikamiUitOpen 0:f177013dc4fc 99 }
MikamiUitOpen 0:f177013dc4fc 100