Diff: ACM1602NI.hpp

Revision:

0:ea06bd02d438

Child:

1:0a38ce51b9b8

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ACM1602NI.hpp	Thu Nov 06 23:48:52 2014 +0000
@@ -0,0 +1,87 @@
+//-------------------------------------------------------
+//  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)
+//
+//  2014/10/14, 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
+        void WriteString(const char str[]);
+        // Write string from specified position
+        void WriteStringXY(const char str[], uint8_t x, uint8_t);
+        // Clear of specified line
+        void ClearLine(uint8_t line)
+        { WriteStringXY("                 ", 0, line); }
+
+    private:
+        // Slave address of ACM1602NI (0x50)
+        //      left-justified 7-bit address
+        static const uint8_t LCD_ADDRESS_ = 0x50 << 1;
+
+        I2C i2c_;               // Object of I2C
+        I2C_TypeDef* myI2c_;    // Pointer of I2C
+
+        bool connected_;        // false: LCD is not connected
+
+        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 SR2
+        bool CheckSR2(uint16_t value)
+        { return value == (myI2c_->SR2 & value); }
+
+        // For check contents of SR1 and SR2
+        bool CheckSR12(uint16_t v1, uint16_t v2)
+        { return (v1 == (myI2c_->SR1 & v1)) &&
+                 (v2 == (myI2c_->SR2 & v2)); }
+
+        void TxDR(uint8_t data) { myI2c_->DR = data; }
+        void SetCR1(uint16_t data) { myI2c_->CR1 |= data; }
+    };
+}
+#endif  // ACM1602NI_HPP