Ciro Edgardo Romero
/
FoodDeposit
Sistema de supervision y alarma para deposito de comida de animales
modules/display/display.cpp@0:5e7248732177, 2021-05-14 (annotated)
- Committer:
- ciror00
- Date:
- Fri May 14 17:27:28 2021 +0000
- Revision:
- 0:5e7248732177
Trabajo final de la materia Introduccion a los Sistemas Embebidos
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
ciror00 | 0:5e7248732177 | 1 | //=====[Libraries]============================================================= |
ciror00 | 0:5e7248732177 | 2 | |
ciror00 | 0:5e7248732177 | 3 | #include "mbed.h" |
ciror00 | 0:5e7248732177 | 4 | #include "arm_book_lib.h" |
ciror00 | 0:5e7248732177 | 5 | #include "display.h" |
ciror00 | 0:5e7248732177 | 6 | |
ciror00 | 0:5e7248732177 | 7 | //=====[Declaration of private defines]======================================== |
ciror00 | 0:5e7248732177 | 8 | |
ciror00 | 0:5e7248732177 | 9 | #define DISPLAY_IR_CLEAR_DISPLAY 0b00000001 |
ciror00 | 0:5e7248732177 | 10 | #define DISPLAY_IR_ENTRY_MODE_SET 0b00000100 |
ciror00 | 0:5e7248732177 | 11 | #define DISPLAY_IR_DISPLAY_CONTROL 0b00001000 |
ciror00 | 0:5e7248732177 | 12 | #define DISPLAY_IR_FUNCTION_SET 0b00100000 |
ciror00 | 0:5e7248732177 | 13 | #define DISPLAY_IR_SET_DDRAM_ADDR 0b10000000 |
ciror00 | 0:5e7248732177 | 14 | |
ciror00 | 0:5e7248732177 | 15 | #define DISPLAY_IR_ENTRY_MODE_SET_INCREMENT 0b00000010 |
ciror00 | 0:5e7248732177 | 16 | #define DISPLAY_IR_ENTRY_MODE_SET_DECREMENT 0b00000000 |
ciror00 | 0:5e7248732177 | 17 | #define DISPLAY_IR_ENTRY_MODE_SET_SHIFT 0b00000001 |
ciror00 | 0:5e7248732177 | 18 | #define DISPLAY_IR_ENTRY_MODE_SET_NO_SHIFT 0b00000000 |
ciror00 | 0:5e7248732177 | 19 | |
ciror00 | 0:5e7248732177 | 20 | #define DISPLAY_IR_DISPLAY_CONTROL_DISPLAY_ON 0b00000100 |
ciror00 | 0:5e7248732177 | 21 | #define DISPLAY_IR_DISPLAY_CONTROL_DISPLAY_OFF 0b00000000 |
ciror00 | 0:5e7248732177 | 22 | #define DISPLAY_IR_DISPLAY_CONTROL_CURSOR_ON 0b00000010 |
ciror00 | 0:5e7248732177 | 23 | #define DISPLAY_IR_DISPLAY_CONTROL_CURSOR_OFF 0b00000000 |
ciror00 | 0:5e7248732177 | 24 | #define DISPLAY_IR_DISPLAY_CONTROL_BLINK_ON 0b00000001 |
ciror00 | 0:5e7248732177 | 25 | #define DISPLAY_IR_DISPLAY_CONTROL_BLINK_OFF 0b00000000 |
ciror00 | 0:5e7248732177 | 26 | |
ciror00 | 0:5e7248732177 | 27 | #define DISPLAY_IR_FUNCTION_SET_8BITS 0b00010000 |
ciror00 | 0:5e7248732177 | 28 | #define DISPLAY_IR_FUNCTION_SET_4BITS 0b00000000 |
ciror00 | 0:5e7248732177 | 29 | #define DISPLAY_IR_FUNCTION_SET_2LINES 0b00001000 |
ciror00 | 0:5e7248732177 | 30 | #define DISPLAY_IR_FUNCTION_SET_1LINE 0b00000000 |
ciror00 | 0:5e7248732177 | 31 | #define DISPLAY_IR_FUNCTION_SET_5x10DOTS 0b00000100 |
ciror00 | 0:5e7248732177 | 32 | #define DISPLAY_IR_FUNCTION_SET_5x8DOTS 0b00000000 |
ciror00 | 0:5e7248732177 | 33 | |
ciror00 | 0:5e7248732177 | 34 | #define DISPLAY_20x4_LINE1_FIRST_CHARACTER_ADDRESS 0 |
ciror00 | 0:5e7248732177 | 35 | #define DISPLAY_20x4_LINE2_FIRST_CHARACTER_ADDRESS 64 |
ciror00 | 0:5e7248732177 | 36 | #define DISPLAY_20x4_LINE3_FIRST_CHARACTER_ADDRESS 20 |
ciror00 | 0:5e7248732177 | 37 | #define DISPLAY_20x4_LINE4_FIRST_CHARACTER_ADDRESS 84 |
ciror00 | 0:5e7248732177 | 38 | |
ciror00 | 0:5e7248732177 | 39 | #define DISPLAY_RS_INSTRUCTION 0 |
ciror00 | 0:5e7248732177 | 40 | #define DISPLAY_RS_DATA 1 |
ciror00 | 0:5e7248732177 | 41 | |
ciror00 | 0:5e7248732177 | 42 | #define DISPLAY_RW_WRITE 0 |
ciror00 | 0:5e7248732177 | 43 | #define DISPLAY_RW_READ 1 |
ciror00 | 0:5e7248732177 | 44 | |
ciror00 | 0:5e7248732177 | 45 | #define DISPLAY_PIN_RS 4 |
ciror00 | 0:5e7248732177 | 46 | #define DISPLAY_PIN_RW 5 |
ciror00 | 0:5e7248732177 | 47 | #define DISPLAY_PIN_EN 6 |
ciror00 | 0:5e7248732177 | 48 | #define DISPLAY_PIN_D0 7 |
ciror00 | 0:5e7248732177 | 49 | #define DISPLAY_PIN_D1 8 |
ciror00 | 0:5e7248732177 | 50 | #define DISPLAY_PIN_D2 9 |
ciror00 | 0:5e7248732177 | 51 | #define DISPLAY_PIN_D3 10 |
ciror00 | 0:5e7248732177 | 52 | #define DISPLAY_PIN_D4 11 |
ciror00 | 0:5e7248732177 | 53 | #define DISPLAY_PIN_D5 12 |
ciror00 | 0:5e7248732177 | 54 | #define DISPLAY_PIN_D6 13 |
ciror00 | 0:5e7248732177 | 55 | #define DISPLAY_PIN_D7 14 |
ciror00 | 0:5e7248732177 | 56 | |
ciror00 | 0:5e7248732177 | 57 | #define DISPLAY_PIN_A_PCF8574 3 |
ciror00 | 0:5e7248732177 | 58 | |
ciror00 | 0:5e7248732177 | 59 | #define I2C1_SDA PB_9 |
ciror00 | 0:5e7248732177 | 60 | #define I2C1_SCL PB_8 |
ciror00 | 0:5e7248732177 | 61 | |
ciror00 | 0:5e7248732177 | 62 | #define PCF8574_I2C_BUS_8BIT_WRITE_ADDRESS 78 |
ciror00 | 0:5e7248732177 | 63 | |
ciror00 | 0:5e7248732177 | 64 | //=====[Declaration of private data types]===================================== |
ciror00 | 0:5e7248732177 | 65 | |
ciror00 | 0:5e7248732177 | 66 | typedef struct{ |
ciror00 | 0:5e7248732177 | 67 | int address; |
ciror00 | 0:5e7248732177 | 68 | char data; |
ciror00 | 0:5e7248732177 | 69 | bool displayPin_RS; |
ciror00 | 0:5e7248732177 | 70 | bool displayPin_RW; |
ciror00 | 0:5e7248732177 | 71 | bool displayPin_EN; |
ciror00 | 0:5e7248732177 | 72 | bool displayPin_A; |
ciror00 | 0:5e7248732177 | 73 | bool displayPin_D4; |
ciror00 | 0:5e7248732177 | 74 | bool displayPin_D5; |
ciror00 | 0:5e7248732177 | 75 | bool displayPin_D6; |
ciror00 | 0:5e7248732177 | 76 | bool displayPin_D7; |
ciror00 | 0:5e7248732177 | 77 | } pcf8574_t; |
ciror00 | 0:5e7248732177 | 78 | |
ciror00 | 0:5e7248732177 | 79 | //=====[Declaration and initialization of public global objects]=============== |
ciror00 | 0:5e7248732177 | 80 | |
ciror00 | 0:5e7248732177 | 81 | DigitalOut displayD0( D0 ); |
ciror00 | 0:5e7248732177 | 82 | DigitalOut displayD1( D1 ); |
ciror00 | 0:5e7248732177 | 83 | DigitalOut displayD2( D2 ); |
ciror00 | 0:5e7248732177 | 84 | DigitalOut displayD3( D3 ); |
ciror00 | 0:5e7248732177 | 85 | DigitalOut displayD4( D4 ); |
ciror00 | 0:5e7248732177 | 86 | DigitalOut displayD5( D5 ); |
ciror00 | 0:5e7248732177 | 87 | DigitalOut displayD6( D6 ); |
ciror00 | 0:5e7248732177 | 88 | DigitalOut displayD7( D7 ); |
ciror00 | 0:5e7248732177 | 89 | DigitalOut displayRS( D8 ); |
ciror00 | 0:5e7248732177 | 90 | DigitalOut displayEN( D9 ); |
ciror00 | 0:5e7248732177 | 91 | |
ciror00 | 0:5e7248732177 | 92 | I2C I2C_PCF8574( I2C1_SDA, I2C1_SCL ); |
ciror00 | 0:5e7248732177 | 93 | |
ciror00 | 0:5e7248732177 | 94 | //=====[Declaration of external public global variables]======================= |
ciror00 | 0:5e7248732177 | 95 | |
ciror00 | 0:5e7248732177 | 96 | //=====[Declaration and initialization of public global variables]============= |
ciror00 | 0:5e7248732177 | 97 | |
ciror00 | 0:5e7248732177 | 98 | //=====[Declaration and initialization of private global variables]============ |
ciror00 | 0:5e7248732177 | 99 | |
ciror00 | 0:5e7248732177 | 100 | static display_t display; |
ciror00 | 0:5e7248732177 | 101 | static pcf8574_t pcf8574; |
ciror00 | 0:5e7248732177 | 102 | static bool initial8BitCommunicationIsCompleted; |
ciror00 | 0:5e7248732177 | 103 | |
ciror00 | 0:5e7248732177 | 104 | //=====[Declarations (prototypes) of private functions]======================== |
ciror00 | 0:5e7248732177 | 105 | |
ciror00 | 0:5e7248732177 | 106 | static void displayPinWrite( uint8_t pinName, int value ); |
ciror00 | 0:5e7248732177 | 107 | static void displayDataBusWrite( uint8_t dataByte ); |
ciror00 | 0:5e7248732177 | 108 | static void displayCodeWrite( bool type, uint8_t dataBus ); |
ciror00 | 0:5e7248732177 | 109 | |
ciror00 | 0:5e7248732177 | 110 | //=====[Implementations of public functions]=================================== |
ciror00 | 0:5e7248732177 | 111 | |
ciror00 | 0:5e7248732177 | 112 | void displayInit( displayConnection_t connection ) |
ciror00 | 0:5e7248732177 | 113 | { |
ciror00 | 0:5e7248732177 | 114 | display.connection = connection; |
ciror00 | 0:5e7248732177 | 115 | |
ciror00 | 0:5e7248732177 | 116 | if( display.connection == DISPLAY_CONNECTION_I2C_PCF8574_IO_EXPANDER) { |
ciror00 | 0:5e7248732177 | 117 | pcf8574.address = PCF8574_I2C_BUS_8BIT_WRITE_ADDRESS; |
ciror00 | 0:5e7248732177 | 118 | pcf8574.data = 0b00000000; |
ciror00 | 0:5e7248732177 | 119 | I2C_PCF8574.frequency(100000); |
ciror00 | 0:5e7248732177 | 120 | displayPinWrite( DISPLAY_PIN_A_PCF8574, ON ); |
ciror00 | 0:5e7248732177 | 121 | } |
ciror00 | 0:5e7248732177 | 122 | |
ciror00 | 0:5e7248732177 | 123 | initial8BitCommunicationIsCompleted = FALSE; |
ciror00 | 0:5e7248732177 | 124 | |
ciror00 | 0:5e7248732177 | 125 | delay( 50 ); |
ciror00 | 0:5e7248732177 | 126 | |
ciror00 | 0:5e7248732177 | 127 | displayCodeWrite( DISPLAY_RS_INSTRUCTION, |
ciror00 | 0:5e7248732177 | 128 | DISPLAY_IR_FUNCTION_SET | |
ciror00 | 0:5e7248732177 | 129 | DISPLAY_IR_FUNCTION_SET_8BITS ); |
ciror00 | 0:5e7248732177 | 130 | delay( 5 ); |
ciror00 | 0:5e7248732177 | 131 | |
ciror00 | 0:5e7248732177 | 132 | displayCodeWrite( DISPLAY_RS_INSTRUCTION, |
ciror00 | 0:5e7248732177 | 133 | DISPLAY_IR_FUNCTION_SET | |
ciror00 | 0:5e7248732177 | 134 | DISPLAY_IR_FUNCTION_SET_8BITS ); |
ciror00 | 0:5e7248732177 | 135 | delay( 1 ); |
ciror00 | 0:5e7248732177 | 136 | |
ciror00 | 0:5e7248732177 | 137 | displayCodeWrite( DISPLAY_RS_INSTRUCTION, |
ciror00 | 0:5e7248732177 | 138 | DISPLAY_IR_FUNCTION_SET | |
ciror00 | 0:5e7248732177 | 139 | DISPLAY_IR_FUNCTION_SET_8BITS ); |
ciror00 | 0:5e7248732177 | 140 | delay( 1 ); |
ciror00 | 0:5e7248732177 | 141 | |
ciror00 | 0:5e7248732177 | 142 | switch( display.connection ) { |
ciror00 | 0:5e7248732177 | 143 | case DISPLAY_CONNECTION_GPIO_8BITS: |
ciror00 | 0:5e7248732177 | 144 | displayCodeWrite( DISPLAY_RS_INSTRUCTION, |
ciror00 | 0:5e7248732177 | 145 | DISPLAY_IR_FUNCTION_SET | |
ciror00 | 0:5e7248732177 | 146 | DISPLAY_IR_FUNCTION_SET_8BITS | |
ciror00 | 0:5e7248732177 | 147 | DISPLAY_IR_FUNCTION_SET_2LINES | |
ciror00 | 0:5e7248732177 | 148 | DISPLAY_IR_FUNCTION_SET_5x8DOTS ); |
ciror00 | 0:5e7248732177 | 149 | delay( 1 ); |
ciror00 | 0:5e7248732177 | 150 | break; |
ciror00 | 0:5e7248732177 | 151 | |
ciror00 | 0:5e7248732177 | 152 | case DISPLAY_CONNECTION_GPIO_4BITS: |
ciror00 | 0:5e7248732177 | 153 | case DISPLAY_CONNECTION_I2C_PCF8574_IO_EXPANDER: |
ciror00 | 0:5e7248732177 | 154 | displayCodeWrite( DISPLAY_RS_INSTRUCTION, |
ciror00 | 0:5e7248732177 | 155 | DISPLAY_IR_FUNCTION_SET | |
ciror00 | 0:5e7248732177 | 156 | DISPLAY_IR_FUNCTION_SET_4BITS ); |
ciror00 | 0:5e7248732177 | 157 | delay( 1 ); |
ciror00 | 0:5e7248732177 | 158 | |
ciror00 | 0:5e7248732177 | 159 | initial8BitCommunicationIsCompleted = TRUE; |
ciror00 | 0:5e7248732177 | 160 | |
ciror00 | 0:5e7248732177 | 161 | displayCodeWrite( DISPLAY_RS_INSTRUCTION, |
ciror00 | 0:5e7248732177 | 162 | DISPLAY_IR_FUNCTION_SET | |
ciror00 | 0:5e7248732177 | 163 | DISPLAY_IR_FUNCTION_SET_4BITS | |
ciror00 | 0:5e7248732177 | 164 | DISPLAY_IR_FUNCTION_SET_2LINES | |
ciror00 | 0:5e7248732177 | 165 | DISPLAY_IR_FUNCTION_SET_5x8DOTS ); |
ciror00 | 0:5e7248732177 | 166 | delay( 1 ); |
ciror00 | 0:5e7248732177 | 167 | break; |
ciror00 | 0:5e7248732177 | 168 | } |
ciror00 | 0:5e7248732177 | 169 | |
ciror00 | 0:5e7248732177 | 170 | displayCodeWrite( DISPLAY_RS_INSTRUCTION, |
ciror00 | 0:5e7248732177 | 171 | DISPLAY_IR_DISPLAY_CONTROL | |
ciror00 | 0:5e7248732177 | 172 | DISPLAY_IR_DISPLAY_CONTROL_DISPLAY_OFF | |
ciror00 | 0:5e7248732177 | 173 | DISPLAY_IR_DISPLAY_CONTROL_CURSOR_OFF | |
ciror00 | 0:5e7248732177 | 174 | DISPLAY_IR_DISPLAY_CONTROL_BLINK_OFF ); |
ciror00 | 0:5e7248732177 | 175 | delay( 1 ); |
ciror00 | 0:5e7248732177 | 176 | |
ciror00 | 0:5e7248732177 | 177 | displayCodeWrite( DISPLAY_RS_INSTRUCTION, |
ciror00 | 0:5e7248732177 | 178 | DISPLAY_IR_CLEAR_DISPLAY ); |
ciror00 | 0:5e7248732177 | 179 | delay( 1 ); |
ciror00 | 0:5e7248732177 | 180 | |
ciror00 | 0:5e7248732177 | 181 | displayCodeWrite( DISPLAY_RS_INSTRUCTION, |
ciror00 | 0:5e7248732177 | 182 | DISPLAY_IR_ENTRY_MODE_SET | |
ciror00 | 0:5e7248732177 | 183 | DISPLAY_IR_ENTRY_MODE_SET_INCREMENT | |
ciror00 | 0:5e7248732177 | 184 | DISPLAY_IR_ENTRY_MODE_SET_NO_SHIFT ); |
ciror00 | 0:5e7248732177 | 185 | delay( 1 ); |
ciror00 | 0:5e7248732177 | 186 | |
ciror00 | 0:5e7248732177 | 187 | displayCodeWrite( DISPLAY_RS_INSTRUCTION, |
ciror00 | 0:5e7248732177 | 188 | DISPLAY_IR_DISPLAY_CONTROL | |
ciror00 | 0:5e7248732177 | 189 | DISPLAY_IR_DISPLAY_CONTROL_DISPLAY_ON | |
ciror00 | 0:5e7248732177 | 190 | DISPLAY_IR_DISPLAY_CONTROL_CURSOR_OFF | |
ciror00 | 0:5e7248732177 | 191 | DISPLAY_IR_DISPLAY_CONTROL_BLINK_OFF ); |
ciror00 | 0:5e7248732177 | 192 | delay( 1 ); |
ciror00 | 0:5e7248732177 | 193 | } |
ciror00 | 0:5e7248732177 | 194 | |
ciror00 | 0:5e7248732177 | 195 | void displayCharPositionWrite( uint8_t charPositionX, uint8_t charPositionY ) |
ciror00 | 0:5e7248732177 | 196 | { |
ciror00 | 0:5e7248732177 | 197 | switch( charPositionY ) { |
ciror00 | 0:5e7248732177 | 198 | case 0: |
ciror00 | 0:5e7248732177 | 199 | displayCodeWrite( DISPLAY_RS_INSTRUCTION, |
ciror00 | 0:5e7248732177 | 200 | DISPLAY_IR_SET_DDRAM_ADDR | |
ciror00 | 0:5e7248732177 | 201 | ( DISPLAY_20x4_LINE1_FIRST_CHARACTER_ADDRESS + |
ciror00 | 0:5e7248732177 | 202 | charPositionX ) ); |
ciror00 | 0:5e7248732177 | 203 | delay( 1 ); |
ciror00 | 0:5e7248732177 | 204 | break; |
ciror00 | 0:5e7248732177 | 205 | |
ciror00 | 0:5e7248732177 | 206 | case 1: |
ciror00 | 0:5e7248732177 | 207 | displayCodeWrite( DISPLAY_RS_INSTRUCTION, |
ciror00 | 0:5e7248732177 | 208 | DISPLAY_IR_SET_DDRAM_ADDR | |
ciror00 | 0:5e7248732177 | 209 | ( DISPLAY_20x4_LINE2_FIRST_CHARACTER_ADDRESS + |
ciror00 | 0:5e7248732177 | 210 | charPositionX ) ); |
ciror00 | 0:5e7248732177 | 211 | delay( 1 ); |
ciror00 | 0:5e7248732177 | 212 | break; |
ciror00 | 0:5e7248732177 | 213 | |
ciror00 | 0:5e7248732177 | 214 | case 2: |
ciror00 | 0:5e7248732177 | 215 | displayCodeWrite( DISPLAY_RS_INSTRUCTION, |
ciror00 | 0:5e7248732177 | 216 | DISPLAY_IR_SET_DDRAM_ADDR | |
ciror00 | 0:5e7248732177 | 217 | ( DISPLAY_20x4_LINE3_FIRST_CHARACTER_ADDRESS + |
ciror00 | 0:5e7248732177 | 218 | charPositionX ) ); |
ciror00 | 0:5e7248732177 | 219 | delay( 1 ); |
ciror00 | 0:5e7248732177 | 220 | break; |
ciror00 | 0:5e7248732177 | 221 | |
ciror00 | 0:5e7248732177 | 222 | case 3: |
ciror00 | 0:5e7248732177 | 223 | displayCodeWrite( DISPLAY_RS_INSTRUCTION, |
ciror00 | 0:5e7248732177 | 224 | DISPLAY_IR_SET_DDRAM_ADDR | |
ciror00 | 0:5e7248732177 | 225 | ( DISPLAY_20x4_LINE4_FIRST_CHARACTER_ADDRESS + |
ciror00 | 0:5e7248732177 | 226 | charPositionX ) ); |
ciror00 | 0:5e7248732177 | 227 | delay( 1 ); |
ciror00 | 0:5e7248732177 | 228 | break; |
ciror00 | 0:5e7248732177 | 229 | } |
ciror00 | 0:5e7248732177 | 230 | } |
ciror00 | 0:5e7248732177 | 231 | |
ciror00 | 0:5e7248732177 | 232 | void displayStringWrite( char const * str ) |
ciror00 | 0:5e7248732177 | 233 | { |
ciror00 | 0:5e7248732177 | 234 | while (*str) { |
ciror00 | 0:5e7248732177 | 235 | displayCodeWrite(DISPLAY_RS_DATA, *str++); |
ciror00 | 0:5e7248732177 | 236 | } |
ciror00 | 0:5e7248732177 | 237 | } |
ciror00 | 0:5e7248732177 | 238 | |
ciror00 | 0:5e7248732177 | 239 | //=====[Implementations of private functions]================================== |
ciror00 | 0:5e7248732177 | 240 | |
ciror00 | 0:5e7248732177 | 241 | static void displayCodeWrite( bool type, uint8_t dataBus ) |
ciror00 | 0:5e7248732177 | 242 | { |
ciror00 | 0:5e7248732177 | 243 | if ( type == DISPLAY_RS_INSTRUCTION ) |
ciror00 | 0:5e7248732177 | 244 | displayPinWrite( DISPLAY_PIN_RS, DISPLAY_RS_INSTRUCTION); |
ciror00 | 0:5e7248732177 | 245 | else |
ciror00 | 0:5e7248732177 | 246 | displayPinWrite( DISPLAY_PIN_RS, DISPLAY_RS_DATA); |
ciror00 | 0:5e7248732177 | 247 | displayPinWrite( DISPLAY_PIN_RW, DISPLAY_RW_WRITE ); |
ciror00 | 0:5e7248732177 | 248 | displayDataBusWrite( dataBus ); |
ciror00 | 0:5e7248732177 | 249 | } |
ciror00 | 0:5e7248732177 | 250 | |
ciror00 | 0:5e7248732177 | 251 | static void displayPinWrite( uint8_t pinName, int value ) |
ciror00 | 0:5e7248732177 | 252 | { |
ciror00 | 0:5e7248732177 | 253 | switch( display.connection ) { |
ciror00 | 0:5e7248732177 | 254 | case DISPLAY_CONNECTION_GPIO_8BITS: |
ciror00 | 0:5e7248732177 | 255 | switch( pinName ) { |
ciror00 | 0:5e7248732177 | 256 | case DISPLAY_PIN_D0: displayD0 = value; break; |
ciror00 | 0:5e7248732177 | 257 | case DISPLAY_PIN_D1: displayD1 = value; break; |
ciror00 | 0:5e7248732177 | 258 | case DISPLAY_PIN_D2: displayD2 = value; break; |
ciror00 | 0:5e7248732177 | 259 | case DISPLAY_PIN_D3: displayD3 = value; break; |
ciror00 | 0:5e7248732177 | 260 | case DISPLAY_PIN_D4: displayD4 = value; break; |
ciror00 | 0:5e7248732177 | 261 | case DISPLAY_PIN_D5: displayD5 = value; break; |
ciror00 | 0:5e7248732177 | 262 | case DISPLAY_PIN_D6: displayD6 = value; break; |
ciror00 | 0:5e7248732177 | 263 | case DISPLAY_PIN_D7: displayD7 = value; break; |
ciror00 | 0:5e7248732177 | 264 | case DISPLAY_PIN_RS: displayRS = value; break; |
ciror00 | 0:5e7248732177 | 265 | case DISPLAY_PIN_EN: displayEN = value; break; |
ciror00 | 0:5e7248732177 | 266 | case DISPLAY_PIN_RW: break; |
ciror00 | 0:5e7248732177 | 267 | default: break; |
ciror00 | 0:5e7248732177 | 268 | } |
ciror00 | 0:5e7248732177 | 269 | case DISPLAY_CONNECTION_GPIO_4BITS: |
ciror00 | 0:5e7248732177 | 270 | switch( pinName ) { |
ciror00 | 0:5e7248732177 | 271 | case DISPLAY_PIN_D4: displayD4 = value; break; |
ciror00 | 0:5e7248732177 | 272 | case DISPLAY_PIN_D5: displayD5 = value; break; |
ciror00 | 0:5e7248732177 | 273 | case DISPLAY_PIN_D6: displayD6 = value; break; |
ciror00 | 0:5e7248732177 | 274 | case DISPLAY_PIN_D7: displayD7 = value; break; |
ciror00 | 0:5e7248732177 | 275 | case DISPLAY_PIN_RS: displayRS = value; break; |
ciror00 | 0:5e7248732177 | 276 | case DISPLAY_PIN_EN: displayEN = value; break; |
ciror00 | 0:5e7248732177 | 277 | case DISPLAY_PIN_RW: break; |
ciror00 | 0:5e7248732177 | 278 | default: break; |
ciror00 | 0:5e7248732177 | 279 | } |
ciror00 | 0:5e7248732177 | 280 | break; |
ciror00 | 0:5e7248732177 | 281 | |
ciror00 | 0:5e7248732177 | 282 | case DISPLAY_CONNECTION_I2C_PCF8574_IO_EXPANDER: |
ciror00 | 0:5e7248732177 | 283 | if ( value ) { |
ciror00 | 0:5e7248732177 | 284 | switch( pinName ) { |
ciror00 | 0:5e7248732177 | 285 | case DISPLAY_PIN_D4: pcf8574.displayPin_D4 = ON; break; |
ciror00 | 0:5e7248732177 | 286 | case DISPLAY_PIN_D5: pcf8574.displayPin_D5 = ON; break; |
ciror00 | 0:5e7248732177 | 287 | case DISPLAY_PIN_D6: pcf8574.displayPin_D6 = ON; break; |
ciror00 | 0:5e7248732177 | 288 | case DISPLAY_PIN_D7: pcf8574.displayPin_D7 = ON; break; |
ciror00 | 0:5e7248732177 | 289 | case DISPLAY_PIN_RS: pcf8574.displayPin_RS = ON; break; |
ciror00 | 0:5e7248732177 | 290 | case DISPLAY_PIN_EN: pcf8574.displayPin_EN = ON; break; |
ciror00 | 0:5e7248732177 | 291 | case DISPLAY_PIN_RW: pcf8574.displayPin_RW = ON; break; |
ciror00 | 0:5e7248732177 | 292 | case DISPLAY_PIN_A_PCF8574: pcf8574.displayPin_A = ON; break; |
ciror00 | 0:5e7248732177 | 293 | default: break; |
ciror00 | 0:5e7248732177 | 294 | } |
ciror00 | 0:5e7248732177 | 295 | } |
ciror00 | 0:5e7248732177 | 296 | else { |
ciror00 | 0:5e7248732177 | 297 | switch( pinName ) { |
ciror00 | 0:5e7248732177 | 298 | case DISPLAY_PIN_D4: pcf8574.displayPin_D4 = OFF; break; |
ciror00 | 0:5e7248732177 | 299 | case DISPLAY_PIN_D5: pcf8574.displayPin_D5 = OFF; break; |
ciror00 | 0:5e7248732177 | 300 | case DISPLAY_PIN_D6: pcf8574.displayPin_D6 = OFF; break; |
ciror00 | 0:5e7248732177 | 301 | case DISPLAY_PIN_D7: pcf8574.displayPin_D7 = OFF; break; |
ciror00 | 0:5e7248732177 | 302 | case DISPLAY_PIN_RS: pcf8574.displayPin_RS = OFF; break; |
ciror00 | 0:5e7248732177 | 303 | case DISPLAY_PIN_EN: pcf8574.displayPin_EN = OFF; break; |
ciror00 | 0:5e7248732177 | 304 | case DISPLAY_PIN_RW: pcf8574.displayPin_RW = OFF; break; |
ciror00 | 0:5e7248732177 | 305 | case DISPLAY_PIN_A_PCF8574: pcf8574.displayPin_A = OFF; break; |
ciror00 | 0:5e7248732177 | 306 | default: break; |
ciror00 | 0:5e7248732177 | 307 | } |
ciror00 | 0:5e7248732177 | 308 | } |
ciror00 | 0:5e7248732177 | 309 | pcf8574.data = 0b00000000; |
ciror00 | 0:5e7248732177 | 310 | if ( pcf8574.displayPin_RS ) pcf8574.data |= 0b00000001; |
ciror00 | 0:5e7248732177 | 311 | if ( pcf8574.displayPin_RW ) pcf8574.data |= 0b00000010; |
ciror00 | 0:5e7248732177 | 312 | if ( pcf8574.displayPin_EN ) pcf8574.data |= 0b00000100; |
ciror00 | 0:5e7248732177 | 313 | if ( pcf8574.displayPin_A ) pcf8574.data |= 0b00001000; |
ciror00 | 0:5e7248732177 | 314 | if ( pcf8574.displayPin_D4 ) pcf8574.data |= 0b00010000; |
ciror00 | 0:5e7248732177 | 315 | if ( pcf8574.displayPin_D5 ) pcf8574.data |= 0b00100000; |
ciror00 | 0:5e7248732177 | 316 | if ( pcf8574.displayPin_D6 ) pcf8574.data |= 0b01000000; |
ciror00 | 0:5e7248732177 | 317 | if ( pcf8574.displayPin_D7 ) pcf8574.data |= 0b10000000; |
ciror00 | 0:5e7248732177 | 318 | I2C_PCF8574.write( pcf8574.address, &pcf8574.data, 1); |
ciror00 | 0:5e7248732177 | 319 | break; |
ciror00 | 0:5e7248732177 | 320 | } |
ciror00 | 0:5e7248732177 | 321 | } |
ciror00 | 0:5e7248732177 | 322 | |
ciror00 | 0:5e7248732177 | 323 | static void displayDataBusWrite( uint8_t dataBus ) |
ciror00 | 0:5e7248732177 | 324 | { |
ciror00 | 0:5e7248732177 | 325 | displayPinWrite( DISPLAY_PIN_EN, OFF ); |
ciror00 | 0:5e7248732177 | 326 | displayPinWrite( DISPLAY_PIN_D7, dataBus & 0b10000000 ); |
ciror00 | 0:5e7248732177 | 327 | displayPinWrite( DISPLAY_PIN_D6, dataBus & 0b01000000 ); |
ciror00 | 0:5e7248732177 | 328 | displayPinWrite( DISPLAY_PIN_D5, dataBus & 0b00100000 ); |
ciror00 | 0:5e7248732177 | 329 | displayPinWrite( DISPLAY_PIN_D4, dataBus & 0b00010000 ); |
ciror00 | 0:5e7248732177 | 330 | switch( display.connection ) { |
ciror00 | 0:5e7248732177 | 331 | case DISPLAY_CONNECTION_GPIO_8BITS: |
ciror00 | 0:5e7248732177 | 332 | displayPinWrite( DISPLAY_PIN_D3, dataBus & 0b00001000 ); |
ciror00 | 0:5e7248732177 | 333 | displayPinWrite( DISPLAY_PIN_D2, dataBus & 0b00000100 ); |
ciror00 | 0:5e7248732177 | 334 | displayPinWrite( DISPLAY_PIN_D1, dataBus & 0b00000010 ); |
ciror00 | 0:5e7248732177 | 335 | displayPinWrite( DISPLAY_PIN_D0, dataBus & 0b00000001 ); |
ciror00 | 0:5e7248732177 | 336 | break; |
ciror00 | 0:5e7248732177 | 337 | |
ciror00 | 0:5e7248732177 | 338 | case DISPLAY_CONNECTION_GPIO_4BITS: |
ciror00 | 0:5e7248732177 | 339 | case DISPLAY_CONNECTION_I2C_PCF8574_IO_EXPANDER: |
ciror00 | 0:5e7248732177 | 340 | if ( initial8BitCommunicationIsCompleted == TRUE) { |
ciror00 | 0:5e7248732177 | 341 | displayPinWrite( DISPLAY_PIN_EN, ON ); |
ciror00 | 0:5e7248732177 | 342 | delay( 1 ); |
ciror00 | 0:5e7248732177 | 343 | displayPinWrite( DISPLAY_PIN_EN, OFF ); |
ciror00 | 0:5e7248732177 | 344 | delay( 1 ); |
ciror00 | 0:5e7248732177 | 345 | displayPinWrite( DISPLAY_PIN_D7, dataBus & 0b00001000 ); |
ciror00 | 0:5e7248732177 | 346 | displayPinWrite( DISPLAY_PIN_D6, dataBus & 0b00000100 ); |
ciror00 | 0:5e7248732177 | 347 | displayPinWrite( DISPLAY_PIN_D5, dataBus & 0b00000010 ); |
ciror00 | 0:5e7248732177 | 348 | displayPinWrite( DISPLAY_PIN_D4, dataBus & 0b00000001 ); |
ciror00 | 0:5e7248732177 | 349 | } |
ciror00 | 0:5e7248732177 | 350 | break; |
ciror00 | 0:5e7248732177 | 351 | |
ciror00 | 0:5e7248732177 | 352 | } |
ciror00 | 0:5e7248732177 | 353 | displayPinWrite( DISPLAY_PIN_EN, ON ); |
ciror00 | 0:5e7248732177 | 354 | delay( 1 ); |
ciror00 | 0:5e7248732177 | 355 | displayPinWrite( DISPLAY_PIN_EN, OFF ); |
ciror00 | 0:5e7248732177 | 356 | delay( 1 ); |
ciror00 | 0:5e7248732177 | 357 | } |