不韋 呂 / UIT_ACM1602NI

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.hpp

Committer:
MikamiUitOpen
Date:
2014-10-20
Revision:
0:d8048b36d982
Child:
1:7c6b2df4e60b

File content as of revision 0:d8048b36d982:

//-------------------------------------------------------
//  Class for LCD, ACM1602NI (Header)
//
//  Default pin assignments
//      D14  SDA ---- to pin5 of LCD module
//      D15  SCL ---- to pin4 of LCD module
//
//  Assignment of I2C ports
//                SDA                SCL
//      I2C1   PB_7 or PB_9(D14)  PB_6(D10) or PB_8(D15)
//      I2C2   PB_3(D3)           PB_10(D6)
//      I2C3   PB_4(D5) or PC_9   PA_8(D7)
//
//  2014/09/13, Copyright (c) 2014 MIKAMI, Naoki
//-------------------------------------------------------
//  I2C_TypeDef: See stm32f401xe.h on following URL
//  http://mbed.org/users/mbed_official/code/mbed/file/
//       552587b429a1/TARGET_NUCLEO_F401RE
//-------------------------------------------------------

#ifndef ACM1602NI_HPP
#define ACM1602NI_HPP

#include "mbed.h"

namespace Mikami
{
    class Acm1602Ni
    {
    public:
        // Constructor
        Acm1602Ni(PinName sda = D14,        // SDA
                  PinName scl = D15,        // SCL
                  uint32_t clock = 100000,  // clock: 100 kHz
                  bool cursor = false,      // cursor:  off
                  bool blink = false);      // blink:   off
        // Return false if LCD is not connected
        bool GetOk() { return connected_; }
        // All clear
        bool Clear();
        // Send command
        bool WriteCmd(uint8_t cmd) { return LcdTx(0x00, cmd); }
        // Write character
        void WriteChar(char data) { LcdTx(0x80, data); }
        // Specify display position, x: 0 - 15, y: 0, 1
        void SetXY(uint8_t x = 0, uint8_t y = 0)
        { WriteCmd(x + y*0x40 | 0x80);}
        // Write string from specified position
        void WriteString(const char str[],
                         uint8_t x = 0, uint8_t y = 0);
        // Clear of specified line
        void ClearLine(uint8_t line)
        { WriteString("                 ", 0, line); }

    private:
        // Object of I2C
        I2C i2c_;

        // Slave address of ACM1602NI (0x50)
        //      left-justified 7-bit address
        static const uint8_t LCD_ADDRESS_ = 0x50 << 1;

        // Set false if LCD is not connected
        bool connected_;
        
        // Pointer of I2C
        I2C_TypeDef* myI2c_;

        bool LcdTx(uint8_t cmdData, uint8_t data);
        bool Start();

        // Forbid to use copy constructor
        Acm1602Ni(const Acm1602Ni&);
        // Forbid to use substitution operator
        Acm1602Ni& operator=(const Acm1602Ni&);

        // For check contents of register
        bool Check(uint32_t rg, uint16_t value)
        { return value == (rg & value); }

        void TxDR(uint8_t data) { myI2c_->DR = data; }
        void SetCR1(uint16_t data) { myI2c_->CR1 |= data; }
    };
}
#endif  // ACM1602NI_HPP