Class library for LCD character display ACM1602NI using I2C on Nucleo. Nucleo 用 I2C 接続の LCD キャラクタ・ディスプレー ACM1602Ni 用のクラス・ライブラリ.
Dependents: UIT2_VariableFIR_LPFHPF UIT2_VariableFIR_LPF UIT2_InputSW_LCD ADDA_Prototype_PollingSW ... more
ACM1602NI.cpp
- Committer:
- MikamiUitOpen
- Date:
- 2016-04-01
- Revision:
- 13:68b93c16fd1d
- Parent:
- 12:b7c761c179c9
File content as of revision 13:68b93c16fd1d:
//------------------------------------------------------- // Class for LCD, ACM1602Ni // // 2016/04/01, Copyright (c) 2016 MIKAMI, Naoki //------------------------------------------------------- #include "ACM1602NI.hpp" namespace Mikami { // Constructor Acm1602Ni::Acm1602Ni(PinName sda, PinName scl, uint32_t clock, bool cursor, bool blink) : i2c_(sda, scl), myI2c_((I2C_TypeDef*)NULL) { if ( ((sda == PB_9) || (sda == PB_7)) && ((scl == PB_8) || (scl == PB_6)) ) myI2c_ = (I2C_TypeDef*)I2C_1; // I2C1 will be used if ( (sda == PB_3) && (scl == PB_10) ) myI2c_ = (I2C_TypeDef*)I2C_2; // I2C2 will be used if ( ((sda == PC_9) || (sda == PB_4)) && (scl == PA_8) ) myI2c_ = (I2C_TypeDef*)I2C_3; // I2C3 will be used if (clock != 100000) i2c_.frequency(clock); wait_ms(40); connected_ = Clear(); // Clear display if (!connected_) { fprintf(stderr, "\r\nLCD ACM1602NI not connected\r\n"); return; } WriteCmd(0x38); // data length:8-bit, 2-line, 5×8 dots WriteCmd(0x0C | (cursor << 1) | blink); WriteCmd(0x06); // cursor direction: rightward } // All clear bool Acm1602Ni::Clear() { bool ok = WriteCmd(0x01); wait_ms(50); return ok; } // Write string void Acm1602Ni::WriteString(const char str[]) { for (int n=0; n<16; n++) if (str[n] == 0) break; else WriteChar(str[n]); } // Write string from specified position void Acm1602Ni::WriteStringXY(const char str[], uint8_t x, uint8_t y) { SetXY(x, y); WriteString(str); } //--------------------------------------------------- // Following member functions: private // Send command and data bool Acm1602Ni::LcdTx(uint8_t cmdData, uint8_t data) { // Generate start condition i2c_.start(); // Send slave address TxDR(LCD_ADDRESS_); if (!IsTxMode()) return false; // Define kind of "data" in next statement TxDR(cmdData); TxDR(data); wait_us(500); // indispensable // Generate stop condition i2c_.stop(); return true; } // Check on transmitter mode bool Acm1602Ni::IsTxMode() { for (int n=0; n<10; n++) { wait_us(10); if (CheckSR12(I2C_SR1_TXE | I2C_SR1_ADDR, I2C_SR2_MSL | I2C_SR2_BUSY | I2C_SR2_TRA)) return true; } return false; } }