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@11:f650f1e809a9, 2017-07-22 (annotated)
- Committer:
- MikamiUitOpen
- Date:
- Sat Jul 22 01:56:41 2017 +0000
- Revision:
- 11:f650f1e809a9
- Parent:
- 10:6e6c0f24e81f
- Child:
- 12:21830002e12d
12, mbed Rev.130 ???????????????????????DISCO-F746 ?????????????????
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
MikamiUitOpen | 10:6e6c0f24e81f | 1 | //--------------------------------------------------------------- |
MikamiUitOpen | 0:f177013dc4fc | 2 | // Class for LCD, AQM1602XA-RN-GBW |
MikamiUitOpen | 10:6e6c0f24e81f | 3 | // Use mbed Rev.129 for Nucleo-F401/446/746 and DISCO-F746 |
MikamiUitOpen | 11:f650f1e809a9 | 4 | // mbed Rev.130 以降で起こる,割り込み処理での動作不良を修正 |
MikamiUitOpen | 11:f650f1e809a9 | 5 | // DISCO-F746 では動作不良は修正できないようだ |
MikamiUitOpen | 0:f177013dc4fc | 6 | // |
MikamiUitOpen | 11:f650f1e809a9 | 7 | // 2017/07/21, Copyright (c) 2016 MIKAMI, Naoki |
MikamiUitOpen | 10:6e6c0f24e81f | 8 | //--------------------------------------------------------------- |
MikamiUitOpen | 0:f177013dc4fc | 9 | |
MikamiUitOpen | 0:f177013dc4fc | 10 | #include "AQM1602.hpp" |
MikamiUitOpen | 0:f177013dc4fc | 11 | |
MikamiUitOpen | 0:f177013dc4fc | 12 | namespace Mikami |
MikamiUitOpen | 0:f177013dc4fc | 13 | { |
MikamiUitOpen | 0:f177013dc4fc | 14 | // Constructor |
MikamiUitOpen | 0:f177013dc4fc | 15 | Aqm1602::Aqm1602(PinName sda, PinName scl, uint32_t clock, |
MikamiUitOpen | 0:f177013dc4fc | 16 | bool cursor, bool blink) |
MikamiUitOpen | 8:854c244a7863 | 17 | : i2cPtr_(new I2C(sda, scl)), i2c_(*i2cPtr_) |
MikamiUitOpen | 8:854c244a7863 | 18 | { Init(clock, cursor, blink); } |
MikamiUitOpen | 0:f177013dc4fc | 19 | |
MikamiUitOpen | 8:854c244a7863 | 20 | Aqm1602::Aqm1602(I2C &i2c, uint32_t clock, |
MikamiUitOpen | 8:854c244a7863 | 21 | bool cursor, bool blink) |
MikamiUitOpen | 8:854c244a7863 | 22 | : i2cPtr_(NULL), i2c_(i2c) |
MikamiUitOpen | 8:854c244a7863 | 23 | { Init(clock, cursor, blink); } |
MikamiUitOpen | 0:f177013dc4fc | 24 | |
MikamiUitOpen | 0:f177013dc4fc | 25 | // All clear |
MikamiUitOpen | 8:854c244a7863 | 26 | bool Aqm1602::Clear() |
MikamiUitOpen | 0:f177013dc4fc | 27 | { |
MikamiUitOpen | 8:854c244a7863 | 28 | bool ok = WriteCmd(0x01); |
MikamiUitOpen | 8:854c244a7863 | 29 | wait_ms(50); |
MikamiUitOpen | 8:854c244a7863 | 30 | return ok; |
MikamiUitOpen | 0:f177013dc4fc | 31 | } |
MikamiUitOpen | 0:f177013dc4fc | 32 | |
MikamiUitOpen | 0:f177013dc4fc | 33 | // Write string |
MikamiUitOpen | 0:f177013dc4fc | 34 | void Aqm1602::WriteString(const char str[]) |
MikamiUitOpen | 0:f177013dc4fc | 35 | { |
MikamiUitOpen | 0:f177013dc4fc | 36 | for (int n=0; n<N_CHR; n++) |
MikamiUitOpen | 0:f177013dc4fc | 37 | if (str[n] == 0) break; |
MikamiUitOpen | 0:f177013dc4fc | 38 | else WriteChar(str[n]); |
MikamiUitOpen | 0:f177013dc4fc | 39 | } |
MikamiUitOpen | 0:f177013dc4fc | 40 | |
MikamiUitOpen | 0:f177013dc4fc | 41 | // Write string from specified position |
MikamiUitOpen | 0:f177013dc4fc | 42 | void Aqm1602::WriteStringXY(const char str[], |
MikamiUitOpen | 9:74a845df6e7a | 43 | uint8_t x, uint8_t y) |
MikamiUitOpen | 0:f177013dc4fc | 44 | { |
MikamiUitOpen | 0:f177013dc4fc | 45 | SetXY(x, y); |
MikamiUitOpen | 0:f177013dc4fc | 46 | WriteString(str); |
MikamiUitOpen | 0:f177013dc4fc | 47 | } |
MikamiUitOpen | 9:74a845df6e7a | 48 | |
MikamiUitOpen | 0:f177013dc4fc | 49 | // Clear of specified line |
MikamiUitOpen | 0:f177013dc4fc | 50 | void Aqm1602::ClearLine(uint8_t line) |
MikamiUitOpen | 0:f177013dc4fc | 51 | { |
MikamiUitOpen | 0:f177013dc4fc | 52 | SetXY(0, line); |
MikamiUitOpen | 0:f177013dc4fc | 53 | for (int n=0; n<N_CHR; n++) |
MikamiUitOpen | 0:f177013dc4fc | 54 | WriteString(" "); |
MikamiUitOpen | 0:f177013dc4fc | 55 | } |
MikamiUitOpen | 0:f177013dc4fc | 56 | |
MikamiUitOpen | 0:f177013dc4fc | 57 | // Set contrast |
MikamiUitOpen | 0:f177013dc4fc | 58 | void Aqm1602::SetContrast(uint8_t c) |
MikamiUitOpen | 0:f177013dc4fc | 59 | { |
MikamiUitOpen | 0:f177013dc4fc | 60 | WriteCmd(0x39); |
MikamiUitOpen | 0:f177013dc4fc | 61 | WriteCmd(0x70 | (c & 0x0f)); // Lower 4 bits |
MikamiUitOpen | 0:f177013dc4fc | 62 | WriteCmd(0x5C | ((c >> 4) & 0x03)); // Higher 2 bits |
MikamiUitOpen | 0:f177013dc4fc | 63 | WriteCmd(0x38); |
MikamiUitOpen | 0:f177013dc4fc | 64 | } |
MikamiUitOpen | 0:f177013dc4fc | 65 | |
MikamiUitOpen | 0:f177013dc4fc | 66 | //--------------------------------------------------- |
MikamiUitOpen | 0:f177013dc4fc | 67 | // Following functions: private |
MikamiUitOpen | 0:f177013dc4fc | 68 | |
MikamiUitOpen | 8:854c244a7863 | 69 | // Initialize |
MikamiUitOpen | 8:854c244a7863 | 70 | void Aqm1602::Init(uint32_t clock, bool cursor, bool blink) |
MikamiUitOpen | 8:854c244a7863 | 71 | { |
MikamiUitOpen | 8:854c244a7863 | 72 | if (clock != 100000) i2c_.frequency(clock); |
MikamiUitOpen | 8:854c244a7863 | 73 | |
MikamiUitOpen | 8:854c244a7863 | 74 | wait_ms(40); |
MikamiUitOpen | 8:854c244a7863 | 75 | connected_ = Clear(); // Clear display |
MikamiUitOpen | 8:854c244a7863 | 76 | if (!connected_) |
MikamiUitOpen | 8:854c244a7863 | 77 | { |
MikamiUitOpen | 8:854c244a7863 | 78 | fprintf(stderr, "\r\nLCD AQM1602 not connected\r\n"); |
MikamiUitOpen | 8:854c244a7863 | 79 | return; |
MikamiUitOpen | 8:854c244a7863 | 80 | } |
MikamiUitOpen | 8:854c244a7863 | 81 | |
MikamiUitOpen | 8:854c244a7863 | 82 | WriteCmd(0x39); // To extended command |
MikamiUitOpen | 8:854c244a7863 | 83 | WriteCmd(0x14); // Internal OSC frequency |
MikamiUitOpen | 8:854c244a7863 | 84 | WriteCmd(0x70 | 0x00); // Contrast set |
MikamiUitOpen | 8:854c244a7863 | 85 | WriteCmd(0x54 | 0x02); // Power/ICON/Contrast control |
MikamiUitOpen | 8:854c244a7863 | 86 | WriteCmd(0x6C); // Follower control |
MikamiUitOpen | 8:854c244a7863 | 87 | wait_ms(200); |
MikamiUitOpen | 8:854c244a7863 | 88 | |
MikamiUitOpen | 8:854c244a7863 | 89 | WriteCmd(0x38); // data length:8-bit, 2-line, 5×8 dots |
MikamiUitOpen | 8:854c244a7863 | 90 | WriteCmd(0x0C | (cursor << 1) | blink); |
MikamiUitOpen | 8:854c244a7863 | 91 | } |
MikamiUitOpen | 8:854c244a7863 | 92 | |
MikamiUitOpen | 0:f177013dc4fc | 93 | // Send command and data |
MikamiUitOpen | 3:414f98234c94 | 94 | bool Aqm1602::LcdTx(uint8_t cmdData, uint8_t data) |
MikamiUitOpen | 0:f177013dc4fc | 95 | { |
MikamiUitOpen | 11:f650f1e809a9 | 96 | /* |
MikamiUitOpen | 11:f650f1e809a9 | 97 | // mbed Rev.130 以降では割り込み処理でうまく動作しない場合がある |
MikamiUitOpen | 0:f177013dc4fc | 98 | char tx[2] = { cmdData, data }; |
MikamiUitOpen | 3:414f98234c94 | 99 | int rt = i2c_.write(LCD_ADDRESS_, tx, 2); |
MikamiUitOpen | 7:5375acc9a74a | 100 | wait_us(30); |
MikamiUitOpen | 3:414f98234c94 | 101 | return (rt == 0) ? true : false; |
MikamiUitOpen | 11:f650f1e809a9 | 102 | */ |
MikamiUitOpen | 11:f650f1e809a9 | 103 | // mbed Rev.130 以降は下記を使う |
MikamiUitOpen | 11:f650f1e809a9 | 104 | i2c_.start(); |
MikamiUitOpen | 11:f650f1e809a9 | 105 | int ack = i2c_.write(LCD_ADDRESS_); |
MikamiUitOpen | 11:f650f1e809a9 | 106 | ack &= i2c_.write(cmdData); |
MikamiUitOpen | 11:f650f1e809a9 | 107 | ack &= i2c_.write(data); |
MikamiUitOpen | 11:f650f1e809a9 | 108 | i2c_.stop(); |
MikamiUitOpen | 11:f650f1e809a9 | 109 | wait_us(30); |
MikamiUitOpen | 11:f650f1e809a9 | 110 | return (ack == 1) ? true : false; |
MikamiUitOpen | 0:f177013dc4fc | 111 | } |
MikamiUitOpen | 0:f177013dc4fc | 112 | } |