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Dependencies:   pat9125_mbed mbed

pixart_lcm/pixart_lcm.cpp@9:53b4b362cbb8, 2017-10-20 (annotated)

Committer:
pixus_mbed
Date:
Fri Oct 20 01:47:37 2017 +0000
Revision:
9:53b4b362cbb8
Parent:
5:61318505e528 
For NUCLEO-L476RG

Who changed what in which revision?

UserRevisionLine numberNew contents of line
pixus_mbed 0:411244c71423 1 #include "pixart_lcm.h"
pixus_mbed 0:411244c71423 2
pixus_mbed 0:411244c71423 3
pixus_mbed 0:411244c71423 4
pixus_mbed 0:411244c71423 5 typedef struct
pixus_mbed 0:411244c71423 6 {
pixus_mbed 0:411244c71423 7 SPI *pSPI ;
pixus_mbed 0:411244c71423 8 DigitalOut *pCSB;
pixus_mbed 0:411244c71423 9 DigitalOut *pRSTB;
pixus_mbed 0:411244c71423 10 DigitalOut *pRS;
pixus_mbed 0:411244c71423 11 } pixart_lcm_state_s;
pixus_mbed 0:411244c71423 12
pixus_mbed 0:411244c71423 13 static pixart_lcm_state_s g_state ;
pixus_mbed 0:411244c71423 14
pixus_mbed 0:411244c71423 15
pixus_mbed 0:411244c71423 16 #define LOW 0
pixus_mbed 0:411244c71423 17 #define HIGH 1
pixus_mbed 0:411244c71423 18 #define PIN_LCM_RS g_state.pRS
pixus_mbed 0:411244c71423 19 #define PIN_LCM_RSTB g_state.pRSTB
pixus_mbed 0:411244c71423 20 #define PIN_LCM_CSB g_state.pCSB
pixus_mbed 0:411244c71423 21 #define digitalWrite(pin,level) *pin = level
pixus_mbed 0:411244c71423 22 #define LCM_RS_LO digitalWrite(PIN_LCM_RS,LOW)
pixus_mbed 0:411244c71423 23 #define LCM_RS_HI digitalWrite(PIN_LCM_RS,HIGH)
pixus_mbed 0:411244c71423 24 #define LCM_RSTB_LO digitalWrite(PIN_LCM_RSTB,LOW)
pixus_mbed 0:411244c71423 25 #define LCM_RSTB_HI digitalWrite(PIN_LCM_RSTB,HIGH)
pixus_mbed 0:411244c71423 26 #define LCM_CSB_LO digitalWrite(PIN_LCM_CSB,LOW)
pixus_mbed 0:411244c71423 27 #define LCM_CSB_HI digitalWrite(PIN_LCM_CSB,HIGH)
pixus_mbed 0:411244c71423 28
pixus_mbed 0:411244c71423 29 #define I2C_ADDRESS (0x73 << 1)
pixus_mbed 0:411244c71423 30 #define delayMicroseconds(us) wait_us(us)
pixus_mbed 0:411244c71423 31 #define delay(ms) wait_ms(ms)
pixus_mbed 0:411244c71423 32
pixus_mbed 0:411244c71423 33 //-----------------------------------------------------------------------
pixus_mbed 0:411244c71423 34 unsigned char hex2dec_nibble(unsigned char hex_nibble)
pixus_mbed 0:411244c71423 35 {
pixus_mbed 0:411244c71423 36 unsigned char dec;
pixus_mbed 0:411244c71423 37
pixus_mbed 0:411244c71423 38 switch(hex_nibble)
pixus_mbed 0:411244c71423 39 {
pixus_mbed 0:411244c71423 40 case 0xA: dec=10; break;
pixus_mbed 0:411244c71423 41 case 0xB: dec=11; break;
pixus_mbed 0:411244c71423 42 case 0xC: dec=12; break;
pixus_mbed 0:411244c71423 43 case 0xD: dec=13; break;
pixus_mbed 0:411244c71423 44 case 0xE: dec=14; break;
pixus_mbed 0:411244c71423 45 case 0xF: dec=15; break;
pixus_mbed 0:411244c71423 46 default: dec=hex_nibble; break;
pixus_mbed 0:411244c71423 47 }
pixus_mbed 0:411244c71423 48
pixus_mbed 0:411244c71423 49 return (dec);
pixus_mbed 0:411244c71423 50 }
pixus_mbed 0:411244c71423 51
pixus_mbed 0:411244c71423 52 unsigned int hex2dec_word(unsigned int hex_word)
pixus_mbed 0:411244c71423 53 {
pixus_mbed 0:411244c71423 54 unsigned char dec_nb[4];
pixus_mbed 0:411244c71423 55 unsigned char nibble3=(hex_word>>12)&0x000f;
pixus_mbed 0:411244c71423 56 unsigned char nibble2=(hex_word>>8)&0x000f;
pixus_mbed 0:411244c71423 57 unsigned char nibble1=(hex_word>>4)&0x000f;
pixus_mbed 0:411244c71423 58 unsigned char nibble0=hex_word&0x000f;
pixus_mbed 0:411244c71423 59
pixus_mbed 0:411244c71423 60 dec_nb[3]=hex2dec_nibble(nibble3);
pixus_mbed 0:411244c71423 61 dec_nb[2]=hex2dec_nibble(nibble2);
pixus_mbed 0:411244c71423 62 dec_nb[1]=hex2dec_nibble(nibble1);
pixus_mbed 0:411244c71423 63 dec_nb[0]=hex2dec_nibble(nibble0);
pixus_mbed 0:411244c71423 64 return ((dec_nb[3]<<12)+(dec_nb[2]<<8)+(dec_nb[1]<<4)+dec_nb[0]);
pixus_mbed 0:411244c71423 65 }
pixus_mbed 0:411244c71423 66
pixus_mbed 0:411244c71423 67 void LCM_WriteCom(unsigned char Command)
pixus_mbed 0:411244c71423 68 {
pixus_mbed 0:411244c71423 69 LCM_CSB_LO;
pixus_mbed 0:411244c71423 70 LCM_RS_LO;
pixus_mbed 0:411244c71423 71 //SPI.transfer(Command);
pixus_mbed 0:411244c71423 72 g_state.pSPI->write(Command);
pixus_mbed 0:411244c71423 73 LCM_CSB_HI;
pixus_mbed 0:411244c71423 74
pixus_mbed 0:411244c71423 75 delayMicroseconds(30);
pixus_mbed 0:411244c71423 76 }
pixus_mbed 0:411244c71423 77
pixus_mbed 0:411244c71423 78 void LCM_WriteData(unsigned char Ascii)
pixus_mbed 0:411244c71423 79 {
pixus_mbed 0:411244c71423 80 LCM_CSB_LO;
pixus_mbed 0:411244c71423 81 LCM_RS_HI;
pixus_mbed 0:411244c71423 82 //SPI.transfer(Ascii);
pixus_mbed 0:411244c71423 83 g_state.pSPI->write(Ascii);
pixus_mbed 0:411244c71423 84 LCM_CSB_HI;
pixus_mbed 0:411244c71423 85
pixus_mbed 0:411244c71423 86 delayMicroseconds(30);
pixus_mbed 0:411244c71423 87 }
pixus_mbed 0:411244c71423 88
pixus_mbed 0:411244c71423 89 void LCM_Init(void)
pixus_mbed 0:411244c71423 90 {
pixus_mbed 0:411244c71423 91 LCM_RSTB_LO;
pixus_mbed 0:411244c71423 92 delay(3);
pixus_mbed 0:411244c71423 93 LCM_RSTB_HI;
pixus_mbed 0:411244c71423 94 delay(20);
pixus_mbed 0:411244c71423 95 LCM_WriteCom(0x30); //wake up
pixus_mbed 0:411244c71423 96 delay(3);
pixus_mbed 0:411244c71423 97 LCM_WriteCom(0x30); //wake up
pixus_mbed 0:411244c71423 98 LCM_WriteCom(0x30); //wake up
pixus_mbed 0:411244c71423 99 LCM_WriteCom(0x39); //function set
pixus_mbed 0:411244c71423 100 LCM_WriteCom(0x14); //internal osc frequency
pixus_mbed 0:411244c71423 101 LCM_WriteCom(0x56); //Contrast set
pixus_mbed 0:411244c71423 102 LCM_WriteCom(0x6D); //follower control
pixus_mbed 0:411244c71423 103 LCM_WriteCom(0x75); //contrast//
pixus_mbed 0:411244c71423 104 LCM_WriteCom(0x0C); //display on
pixus_mbed 0:411244c71423 105 LCM_WriteCom(0x06); //entry mode
pixus_mbed 0:411244c71423 106 LCM_WriteCom(0x01); //clear
pixus_mbed 0:411244c71423 107
pixus_mbed 0:411244c71423 108 delay(10);
pixus_mbed 0:411244c71423 109 }
pixus_mbed 0:411244c71423 110
pixus_mbed 0:411244c71423 111 void LCM_Clear(void)
pixus_mbed 0:411244c71423 112 {
pixus_mbed 0:411244c71423 113 LCM_WriteCom(0x01);
pixus_mbed 0:411244c71423 114
pixus_mbed 0:411244c71423 115 delay(2);
pixus_mbed 0:411244c71423 116 }
pixus_mbed 0:411244c71423 117
pixus_mbed 0:411244c71423 118 void LCM_SetPosition(unsigned char line, unsigned char position)//line=1 or 2; position=1~16
pixus_mbed 0:411244c71423 119 {
pixus_mbed 0:411244c71423 120 unsigned char address;
pixus_mbed 0:411244c71423 121
pixus_mbed 0:411244c71423 122 address = ((line-1) * 0x40) + (position-1);
pixus_mbed 0:411244c71423 123 address = 0x80 + (address & 0x7F);
pixus_mbed 0:411244c71423 124
pixus_mbed 0:411244c71423 125 LCM_WriteCom(address);
pixus_mbed 0:411244c71423 126 }
pixus_mbed 0:411244c71423 127
pixus_mbed 0:411244c71423 128 void LCM_DisplayString(unsigned char line, unsigned char position, const char *ptr)
pixus_mbed 0:411244c71423 129 {
pixus_mbed 0:411244c71423 130 LCM_SetPosition(line,position);
pixus_mbed 0:411244c71423 131
pixus_mbed 0:411244c71423 132 while (*ptr)
pixus_mbed 0:411244c71423 133 {
pixus_mbed 0:411244c71423 134 LCM_WriteData(*ptr++);
pixus_mbed 0:411244c71423 135 }
pixus_mbed 0:411244c71423 136 }
pixus_mbed 0:411244c71423 137
pixus_mbed 0:411244c71423 138 void LCM_DisplayDecimal(unsigned char line, unsigned char position, unsigned int hex_word, unsigned char digits)
pixus_mbed 0:411244c71423 139 {
pixus_mbed 0:411244c71423 140 unsigned char sign;//0:positive, 1:negative
pixus_mbed 0:411244c71423 141 unsigned int dec_num;
pixus_mbed 0:411244c71423 142 unsigned char digit[5];
pixus_mbed 0:411244c71423 143 signed char ii;
pixus_mbed 0:411244c71423 144
pixus_mbed 0:411244c71423 145 if(hex_word & 0x8000)
pixus_mbed 0:411244c71423 146 sign=1;
pixus_mbed 0:411244c71423 147 else
pixus_mbed 0:411244c71423 148 sign=0;
pixus_mbed 0:411244c71423 149
pixus_mbed 0:411244c71423 150 if(sign==1)
pixus_mbed 0:411244c71423 151 hex_word=~hex_word+1;
pixus_mbed 0:411244c71423 152
pixus_mbed 0:411244c71423 153 dec_num=hex2dec_word(hex_word);
pixus_mbed 0:411244c71423 154 digit[4]=dec_num/10000;
pixus_mbed 0:411244c71423 155 digit[3]=(dec_num%10000)/1000;
pixus_mbed 0:411244c71423 156 digit[2]=(dec_num%1000)/100;
pixus_mbed 0:411244c71423 157 digit[1]=(dec_num%100)/10;
pixus_mbed 0:411244c71423 158 digit[0]=dec_num%10;
pixus_mbed 0:411244c71423 159
pixus_mbed 0:411244c71423 160 LCM_SetPosition(line,position);
pixus_mbed 0:411244c71423 161
pixus_mbed 0:411244c71423 162 if(sign==1)
pixus_mbed 0:411244c71423 163 LCM_WriteData('-');
pixus_mbed 0:411244c71423 164 else
pixus_mbed 0:411244c71423 165 LCM_WriteData('+');
pixus_mbed 0:411244c71423 166
pixus_mbed 0:411244c71423 167 for(ii=(digits-1);ii>=0;ii--)
pixus_mbed 0:411244c71423 168 {
pixus_mbed 0:411244c71423 169 LCM_WriteData(digit[ii] | 0x30);//decimal to ascii
pixus_mbed 0:411244c71423 170 }
pixus_mbed 0:411244c71423 171
pixus_mbed 0:411244c71423 172 }
pixus_mbed 0:411244c71423 173
pixus_mbed 0:411244c71423 174 void LCM_ClearLine(unsigned char line)// line: 1 or 2
pixus_mbed 0:411244c71423 175 {
pixus_mbed 0:411244c71423 176 LCM_DisplayString(line,1," ");
pixus_mbed 0:411244c71423 177 }
pixus_mbed 0:411244c71423 178
pixus_mbed 0:411244c71423 179 void LCM_DisplayString_Reset(void)
pixus_mbed 0:411244c71423 180 {
pixus_mbed 0:411244c71423 181 LCM_DisplayString(1,1,"SHAFT"); LCM_DisplayString(1,8,"U/D");LCM_DisplayDecimal(1,12,0x000,4);
pixus_mbed 0:411244c71423 182 LCM_DisplayString(2,1,"SPRING");LCM_DisplayString(2,8,"P/R");LCM_DisplayDecimal(2,12,0x000,4);
pixus_mbed 0:411244c71423 183 }
pixus_mbed 0:411244c71423 184
pixus_mbed 0:411244c71423 185 void LCM_DisplayString_Boot(boolean sen_status)
pixus_mbed 0:411244c71423 186 {
pixus_mbed 0:411244c71423 187 LCM_DisplayString(1,1,"PixArt Shaft EVK");
pixus_mbed 5:61318505e528 188 LCM_DisplayString(2,1,"PAT9125 FW V2.40");
pixus_mbed 0:411244c71423 189 delay(2000);
pixus_mbed 0:411244c71423 190
pixus_mbed 0:411244c71423 191 LCM_ClearLine(1);
pixus_mbed 0:411244c71423 192 LCM_ClearLine(2);
pixus_mbed 0:411244c71423 193
pixus_mbed 0:411244c71423 194 if(sen_status == true)
pixus_mbed 0:411244c71423 195 {
pixus_mbed 0:411244c71423 196 LCM_DisplayString_Reset();
pixus_mbed 0:411244c71423 197 }
pixus_mbed 0:411244c71423 198 else
pixus_mbed 0:411244c71423 199 {
pixus_mbed 0:411244c71423 200 LCM_DisplayString(2,1,"Read Sensor Fail");
pixus_mbed 5:61318505e528 201 while(1);//stop here if read sensor fail as a warning.
pixus_mbed 0:411244c71423 202 }
pixus_mbed 0:411244c71423 203 }
pixus_mbed 0:411244c71423 204
pixus_mbed 0:411244c71423 205 //-----------------------------------------------------------------------
pixus_mbed 0:411244c71423 206
pixus_mbed 0:411244c71423 207 pixart_lcm::pixart_lcm(SPI *pSPI, DigitalOut *pCSB, DigitalOut *pRSTB, DigitalOut *pRS)
pixus_mbed 0:411244c71423 208 {
pixus_mbed 0:411244c71423 209 g_state.pSPI = pSPI;
pixus_mbed 0:411244c71423 210 g_state.pCSB = pCSB;
pixus_mbed 0:411244c71423 211 g_state.pRSTB = pRSTB;
pixus_mbed 0:411244c71423 212 g_state.pRS = pRS;
pixus_mbed 0:411244c71423 213 *g_state.pRS = 1;
pixus_mbed 0:411244c71423 214 LCM_Init();
pixus_mbed 0:411244c71423 215 }
pixus_mbed 0:411244c71423 216
pixus_mbed 0:411244c71423 217 void pixart_lcm::LCM_DisplayString(unsigned char line, unsigned char position, const char *ptr)
pixus_mbed 0:411244c71423 218 {
pixus_mbed 0:411244c71423 219 ::LCM_DisplayString(line, position, ptr);
pixus_mbed 0:411244c71423 220 }
pixus_mbed 0:411244c71423 221 void pixart_lcm::LCM_DisplayDecimal(unsigned char line, unsigned char position, unsigned int hex_word, unsigned char digits)
pixus_mbed 0:411244c71423 222 {
pixus_mbed 0:411244c71423 223 ::LCM_DisplayDecimal(line, position, hex_word, digits);
pixus_mbed 0:411244c71423 224 }
pixus_mbed 0:411244c71423 225 void pixart_lcm::LCM_DisplayString_Reset(void)
pixus_mbed 0:411244c71423 226 {
pixus_mbed 0:411244c71423 227 ::LCM_DisplayString_Reset();
pixus_mbed 0:411244c71423 228 }
pixus_mbed 0:411244c71423 229 void pixart_lcm::LCM_DisplayString_Boot(boolean sen_status)
pixus_mbed 0:411244c71423 230 {
pixus_mbed 0:411244c71423 231 ::LCM_DisplayString_Boot(sen_status);
pixus_mbed 0:411244c71423 232 }