CQpub0 Mikami / ACM1602NI_NucleoF4

Library for LCD ACM1602NI connected using I2C interface on Nucleo F401/411. Nucleo F401/411RE で使える I2C 接続の LCD ACM1602NI 用のライブラリ．

Dependents:   ACM1602NI_NucleoF4_Demo ACM1602NI_NucleoF4_Demo

ACM1602NI.cpp@1:0a38ce51b9b8, 2014-12-09 (annotated)

Committer:
CQpub0Mikami
Date:
Tue Dec 09 13:24:27 2014 +0000
Revision:
1:0a38ce51b9b8
Parent:
0:ea06bd02d438
Child:
2:56a2f5e674e4
2

Who changed what in which revision?

UserRevisionLine numberNew contents of line
CQpub0Mikami 0:ea06bd02d438 1 //-------------------------------------------------------
CQpub0Mikami 0:ea06bd02d438 2 // Class for LCD, ACM1602Ni
CQpub0Mikami 0:ea06bd02d438 3 //
CQpub0Mikami 1:0a38ce51b9b8 4 // 2014/12/09, Copyright (c) 2014 MIKAMI, Naoki
CQpub0Mikami 0:ea06bd02d438 5 //-------------------------------------------------------
CQpub0Mikami 0:ea06bd02d438 6
CQpub0Mikami 0:ea06bd02d438 7 #include "ACM1602NI.hpp"
CQpub0Mikami 0:ea06bd02d438 8
CQpub0Mikami 0:ea06bd02d438 9 namespace Mikami
CQpub0Mikami 0:ea06bd02d438 10 {
CQpub0Mikami 0:ea06bd02d438 11 // Constructor
CQpub0Mikami 0:ea06bd02d438 12 Acm1602Ni::Acm1602Ni(PinName sda, PinName scl, uint32_t clock,
CQpub0Mikami 0:ea06bd02d438 13 bool cursor, bool blink)
CQpub0Mikami 0:ea06bd02d438 14 : i2c_(sda, scl), myI2c_((I2C_TypeDef*)NULL)
CQpub0Mikami 0:ea06bd02d438 15 {
CQpub0Mikami 0:ea06bd02d438 16 if ( ((sda == PB_9) || (sda == PB_7)) &&
CQpub0Mikami 0:ea06bd02d438 17 ((scl == PB_8) || (scl == PB_6)) )
CQpub0Mikami 0:ea06bd02d438 18 myI2c_ = (I2C_TypeDef*)I2C_1; // I2C1 will be used
CQpub0Mikami 0:ea06bd02d438 19 if ( (sda == PB_3) && (scl == PB_10) )
CQpub0Mikami 0:ea06bd02d438 20 myI2c_ = (I2C_TypeDef*)I2C_2; // I2C2 will be used
CQpub0Mikami 0:ea06bd02d438 21 if ( ((sda == PC_9) || (sda == PB_4)) &&
CQpub0Mikami 0:ea06bd02d438 22 (scl == PA_8) )
CQpub0Mikami 0:ea06bd02d438 23 myI2c_ = (I2C_TypeDef*)I2C_3; // I2C3 will be used
CQpub0Mikami 0:ea06bd02d438 24
CQpub0Mikami 0:ea06bd02d438 25 connected_ = Clear(); // Clear display
CQpub0Mikami 0:ea06bd02d438 26 if (!connected_)
CQpub0Mikami 0:ea06bd02d438 27 {
CQpub0Mikami 0:ea06bd02d438 28 fprintf(stderr, "\r\nLCD device not connected\r\n");
CQpub0Mikami 0:ea06bd02d438 29 return;
CQpub0Mikami 0:ea06bd02d438 30 }
CQpub0Mikami 0:ea06bd02d438 31 if (clock != 100000) i2c_.frequency(clock);
CQpub0Mikami 0:ea06bd02d438 32
CQpub0Mikami 0:ea06bd02d438 33 WriteCmd(0x38); // data length：8-bit, 2-line, 5×8 dots
CQpub0Mikami 0:ea06bd02d438 34 WriteCmd(0x0C | (cursor << 1) | blink);
CQpub0Mikami 0:ea06bd02d438 35 WriteCmd(0x06); // cursor direction: rightward
CQpub0Mikami 0:ea06bd02d438 36 }
CQpub0Mikami 0:ea06bd02d438 37
CQpub0Mikami 0:ea06bd02d438 38 // All clear
CQpub0Mikami 0:ea06bd02d438 39 bool Acm1602Ni::Clear()
CQpub0Mikami 0:ea06bd02d438 40 {
CQpub0Mikami 0:ea06bd02d438 41 bool ok = WriteCmd(0x01);
CQpub0Mikami 0:ea06bd02d438 42 wait_ms(50);
CQpub0Mikami 0:ea06bd02d438 43 return ok;
CQpub0Mikami 0:ea06bd02d438 44 }
CQpub0Mikami 0:ea06bd02d438 45
CQpub0Mikami 1:0a38ce51b9b8 46 // Write string
CQpub0Mikami 0:ea06bd02d438 47 void Acm1602Ni::WriteString(const char str[])
CQpub0Mikami 0:ea06bd02d438 48 {
CQpub0Mikami 0:ea06bd02d438 49 for (int n=0; n<16; n++)
CQpub0Mikami 0:ea06bd02d438 50 if (str[n] == 0) break;
CQpub0Mikami 0:ea06bd02d438 51 else WriteChar(str[n]);
CQpub0Mikami 0:ea06bd02d438 52 }
CQpub0Mikami 0:ea06bd02d438 53
CQpub0Mikami 0:ea06bd02d438 54 // Write string from specified position
CQpub0Mikami 0:ea06bd02d438 55 void Acm1602Ni::WriteStringXY(const char str[],
CQpub0Mikami 0:ea06bd02d438 56 uint8_t x, uint8_t y)
CQpub0Mikami 0:ea06bd02d438 57 {
CQpub0Mikami 0:ea06bd02d438 58 SetXY(x, y);
CQpub0Mikami 0:ea06bd02d438 59 WriteString(str);
CQpub0Mikami 0:ea06bd02d438 60 }
CQpub0Mikami 0:ea06bd02d438 61
CQpub0Mikami 0:ea06bd02d438 62 //---------------------------------------------------
CQpub0Mikami 0:ea06bd02d438 63 // Following functions: private
CQpub0Mikami 0:ea06bd02d438 64
CQpub0Mikami 0:ea06bd02d438 65 // Send command and data
CQpub0Mikami 0:ea06bd02d438 66 bool Acm1602Ni::LcdTx(uint8_t cmdData, uint8_t data)
CQpub0Mikami 0:ea06bd02d438 67 {
CQpub0Mikami 0:ea06bd02d438 68 if (!Start()) return false;
CQpub0Mikami 0:ea06bd02d438 69 // defines king of "data" in next statement
CQpub0Mikami 0:ea06bd02d438 70 TxDR(cmdData);
CQpub0Mikami 0:ea06bd02d438 71 TxDR(data);
CQpub0Mikami 0:ea06bd02d438 72 wait_us(500); // indispensable
CQpub0Mikami 0:ea06bd02d438 73 // Generate stop condition
CQpub0Mikami 0:ea06bd02d438 74 SetCR1(I2C_CR1_STOP);
CQpub0Mikami 0:ea06bd02d438 75 return true;
CQpub0Mikami 0:ea06bd02d438 76 }
CQpub0Mikami 0:ea06bd02d438 77
CQpub0Mikami 0:ea06bd02d438 78 // Preparation for send of command and data
CQpub0Mikami 0:ea06bd02d438 79 bool Acm1602Ni::Start()
CQpub0Mikami 0:ea06bd02d438 80 {
CQpub0Mikami 0:ea06bd02d438 81 const uint8_t WAIT = 20;
CQpub0Mikami 0:ea06bd02d438 82 const uint8_t LENGTH = 10;
CQpub0Mikami 0:ea06bd02d438 83
CQpub0Mikami 0:ea06bd02d438 84 // wait for I2C not busy
CQpub0Mikami 0:ea06bd02d438 85 for (int n=0; n<LENGTH; n++)
CQpub0Mikami 0:ea06bd02d438 86 {
CQpub0Mikami 0:ea06bd02d438 87 wait_us(WAIT);
CQpub0Mikami 0:ea06bd02d438 88 if (!CheckSR2(I2C_SR2_BUSY)) break;
CQpub0Mikami 0:ea06bd02d438 89 if (n == LENGTH-1) return false;
CQpub0Mikami 0:ea06bd02d438 90 }
CQpub0Mikami 0:ea06bd02d438 91
CQpub0Mikami 0:ea06bd02d438 92 // Generate start condition
CQpub0Mikami 0:ea06bd02d438 93 SetCR1(I2C_CR1_START);
CQpub0Mikami 0:ea06bd02d438 94 // Confirm start condition and master mode
CQpub0Mikami 0:ea06bd02d438 95 for (int n=0; n<LENGTH; n++)
CQpub0Mikami 0:ea06bd02d438 96 {
CQpub0Mikami 0:ea06bd02d438 97 wait_us(WAIT);
CQpub0Mikami 0:ea06bd02d438 98 if (CheckSR12(I2C_SR1_SB, I2C_SR2_MSL |
CQpub0Mikami 0:ea06bd02d438 99 I2C_SR2_BUSY)) break;
CQpub0Mikami 0:ea06bd02d438 100 if (n == LENGTH-1) return false;
CQpub0Mikami 0:ea06bd02d438 101 }
CQpub0Mikami 0:ea06bd02d438 102
CQpub0Mikami 0:ea06bd02d438 103 // Send slave address
CQpub0Mikami 0:ea06bd02d438 104 TxDR(LCD_ADDRESS_);
CQpub0Mikami 0:ea06bd02d438 105 // Confirm on transmit mode
CQpub0Mikami 0:ea06bd02d438 106 for (int n=0; n<LENGTH; n++)
CQpub0Mikami 0:ea06bd02d438 107 {
CQpub0Mikami 0:ea06bd02d438 108 wait_us(WAIT);
CQpub0Mikami 0:ea06bd02d438 109 if (CheckSR12(I2C_SR1_TXE | I2C_SR1_ADDR,
CQpub0Mikami 0:ea06bd02d438 110 I2C_SR2_MSL | I2C_SR2_BUSY
CQpub0Mikami 0:ea06bd02d438 111 | I2C_SR2_TRA)) break;
CQpub0Mikami 0:ea06bd02d438 112 if (n == LENGTH-1) return false;
CQpub0Mikami 0:ea06bd02d438 113 }
CQpub0Mikami 0:ea06bd02d438 114
CQpub0Mikami 0:ea06bd02d438 115 return true;
CQpub0Mikami 0:ea06bd02d438 116 }
CQpub0Mikami 0:ea06bd02d438 117 }