Ciro Edgardo Romero
Sistema de supervision y alarma para deposito de comida de animales
Revision 0:5e7248732177, committed 2021-05-14
- Comitter:
- ciror00
- Date:
- Fri May 14 17:27:28 2021 +0000
- Commit message:
- Trabajo final de la materia Introduccion a los Sistemas Embebidos
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/.gitignore Fri May 14 17:27:28 2021 +0000 @@ -0,0 +1,4 @@ +.build +.mbed +projectfiles +*.py*
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/CONTRIBUTING.md Fri May 14 17:27:28 2021 +0000 @@ -0,0 +1,5 @@ +# Contributing to Mbed OS + +Mbed OS is an open-source, device software platform for the Internet of Things. Contributions are an important part of the platform, and our goal is to make it as simple as possible to become a contributor. + +To encourage productive collaboration, as well as robust, consistent and maintainable code, we have a set of guidelines for [contributing to Mbed OS](https://os.mbed.com/docs/mbed-os/latest/contributing/index.html).
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/README.md Fri May 14 17:27:28 2021 +0000 @@ -0,0 +1,64 @@ + +# Blinky Mbed OS example + +The example project is part of the [Arm Mbed OS Official Examples](https://os.mbed.com/code/) and is the [getting started example for Mbed OS](https://os.mbed.com/docs/mbed-os/v5.14/quick-start/index.html). It contains an application that repeatedly blinks an LED on supported [Mbed boards](https://os.mbed.com/platforms/). + +You can build the project with all supported [Mbed OS build tools](https://os.mbed.com/docs/mbed-os/latest/tools/index.html). However, this example project specifically refers to the command-line interface tool [Arm Mbed CLI](https://github.com/ARMmbed/mbed-cli#installing-mbed-cli). +(Note: To see a rendered example you can import into the Arm Online Compiler, please see our [import quick start](https://os.mbed.com/docs/mbed-os/latest/quick-start/online-with-the-online-compiler.html#importing-the-code).) + +1. [Install Mbed CLI](https://os.mbed.com/docs/mbed-os/latest/quick-start/offline-with-mbed-cli.html). + +1. Clone this repository on your system, and change the current directory to where the project was cloned: + + ```bash + $ git clone git@github.com:armmbed/mbed-os-example-blinky && cd mbed-os-example-blinky + ``` + + Alternatively, you can download the example project with Arm Mbed CLI using the `import` subcommand: + + ```bash + $ mbed import mbed-os-example-blinky && cd mbed-os-example-blinky + ``` + + +## Application functionality + +The `main()` function is the single thread in the application. It toggles the state of a digital output connected to an LED on the board. + +## Building and running + +1. Connect a USB cable between the USB port on the board and the host computer. +2. <a name="build_cmd"></a> Run the following command to build the example project and program the microcontroller flash memory: + ```bash + $ mbed compile -m <TARGET> -t <TOOLCHAIN> --flash + ``` +The binary is located at `./BUILD/<TARGET>/<TOOLCHAIN>/mbed-os-example-blinky.bin`. + +Alternatively, you can manually copy the binary to the board, which you mount on the host computer over USB. + +Depending on the target, you can build the example project with the `GCC_ARM`, `ARM` or `IAR` toolchain. After installing Arm Mbed CLI, run the command below to determine which toolchain supports your target: + +```bash +$ mbed compile -S +``` + +## Expected output +The LED on your target turns on and off every 500 milliseconds. + + +## Troubleshooting +If you have problems, you can review the [documentation](https://os.mbed.com/docs/latest/tutorials/debugging.html) for suggestions on what could be wrong and how to fix it. + +## Related Links + +* [Mbed OS Stats API](https://os.mbed.com/docs/latest/apis/mbed-statistics.html). +* [Mbed OS Configuration](https://os.mbed.com/docs/latest/reference/configuration.html). +* [Mbed OS Serial Communication](https://os.mbed.com/docs/latest/tutorials/serial-communication.html). +* [Mbed OS bare metal](https://os.mbed.com/docs/mbed-os/latest/reference/mbed-os-bare-metal.html). +* [Mbed boards](https://os.mbed.com/platforms/). + +### License and contributions + +The software is provided under Apache-2.0 license. Contributions to this project are accepted under the same license. Please see contributing.md for more info. + +This project contains code from other projects. The original license text is included in those source files. They must comply with our license guide.
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Fri May 14 17:27:28 2021 +0000
@@ -0,0 +1,185 @@
+//=====[Libraries]=============================================================
+
+#include "arm_book_lib.h"
+#include "display.h"
+
+//=====[Declaration of private defines]======================================
+
+#define DISPLAY_REFRESH_TIME_MS 1000
+
+//=====[Declaration and initialization of public global objects]===============
+
+Serial uartUsb(USBTX, USBRX);
+AnalogIn ligthSensor(A0);
+
+DigitalIn blueButton(BUTTON1);
+DigitalOut verminLed(LED1);
+DigitalOut alarmLed(LED3);
+DigitalOut otherLed(LED2);
+
+DigitalOut sirenPin(PE_10); // Buzzer
+
+// Interrupciones
+InterruptIn pir(PG_0); // HC-SR501
+InterruptIn shock(PG_1); // EM8343
+
+Ticker preventiveCheck;
+
+//=====[Declaration of external public global variables]=======================
+
+//=====[Declaration and initialization of public global variables]=============
+
+float ligth = 0.0;
+int shaking = 0;
+
+bool check = OFF;
+bool pirStatus = ON;
+bool paused = OFF;
+bool maintenance = OFF;
+bool verminDetectorState = OFF;
+
+//=====[Declaration and initialization of private global variables]============
+
+//=====[Declarations (prototypes) of public functions]=========================
+
+static void maintenanceMode();
+
+static void userInterfaceDisplayInit();
+static void userInterfaceDisplayUpdate(float ligth, bool vermin);
+
+static void displayClear();
+static void alarm();
+
+void verminDetected();
+void insideStatusIn();
+void insideStatusOut();
+
+//=====[Main function, the program entry point after power on or reset]========
+
+int main(){
+ userInterfaceDisplayInit();
+
+ shock.mode(PullDown);
+ //pir.mode(PullDown);
+
+ shock.fall(&verminDetected);
+ pir.fall(&insideStatusIn);
+ preventiveCheck.attach([](){otherLed = !otherLed;}, 10.00);
+
+ otherLed = OFF;
+
+ while(1) {
+ maintenance = (!blueButton) ? ON : OFF;
+
+ if(maintenance){
+ if(paused == ON){
+ paused = OFF;
+ userInterfaceDisplayInit();
+ }
+ ligth = ligthSensor.read() * 100;
+ userInterfaceDisplayUpdate(ligth, check);
+ alarm();
+ }else{
+ maintenanceMode();
+ }
+ }
+}
+
+//=====[Implementations of public functions]===================================
+
+static void userInterfaceDisplayInit(){
+ displayInit( DISPLAY_CONNECTION_I2C_PCF8574_IO_EXPANDER );
+ displayClear();
+ displayCharPositionWrite ( 0,1 );
+ displayStringWrite( "Luz: " );
+ displayCharPositionWrite ( 0,2 );
+ displayStringWrite( "DET: " );
+}
+
+static void userInterfaceDisplayUpdate(float ligth, bool vermin){
+ static int accumulatedDisplayTime = 0;
+ char ligthString[2];
+
+ if( accumulatedDisplayTime >= DISPLAY_REFRESH_TIME_MS ) {
+ accumulatedDisplayTime = 0;
+
+ sprintf(ligthString, "%.2f", ligth);
+ displayCharPositionWrite ( 7,1 );
+ displayStringWrite( ligthString );
+ displayCharPositionWrite ( 12,1 );
+ displayStringWrite( "lux" );
+ uartUsb.printf( "Luz: %f lux\r\n", ligth);
+
+ displayCharPositionWrite ( 7,2 );
+ if(!vermin || pir){
+ displayStringWrite("DETECCION");
+ }else{
+ displayStringWrite("VACIO ");
+ }
+
+ if(verminDetectorState){
+ displayCharPositionWrite ( 7,0 );
+ displayStringWrite("ALERTA!");
+ displayCharPositionWrite ( 7,3 );
+ displayStringWrite("ALERTA!");
+ }else{
+ displayCharPositionWrite ( 7,0 );
+ displayStringWrite(" ");
+ displayCharPositionWrite ( 7,3 );
+ displayStringWrite(" ");
+ }
+ } else {
+ accumulatedDisplayTime = accumulatedDisplayTime + 1;
+ }
+}
+
+static void maintenanceMode(){
+ displayClear();
+ displayCharPositionWrite(3,1);
+ displayStringWrite("MANTENIMIENTO");
+ verminDetectorState = OFF;
+ paused = ON;
+}
+
+void verminDetected(){
+ if(!verminDetectorState){
+ verminDetectorState = ON;
+ }
+}
+
+void insideStatusIn(){
+ check = ON;
+ verminLed = ON;
+ pir.fall(NULL);
+ pir.rise(&insideStatusOut);
+}
+
+void insideStatusOut(){
+ check = OFF;
+ verminLed = OFF;
+ pir.rise(NULL);
+ if(pirStatus){
+ pir.fall(&insideStatusIn);
+ }
+}
+
+static void displayClear(){
+ displayCharPositionWrite(0,0);
+ displayStringWrite(" ");
+ displayCharPositionWrite(0,1);
+ displayStringWrite(" ");
+ displayCharPositionWrite(0,2);
+ displayStringWrite(" ");
+ displayCharPositionWrite(0,3);
+ displayStringWrite(" ");
+}
+
+static void alarm(){
+ if(verminDetectorState){
+ sirenPin = !sirenPin;
+ alarmLed = sirenPin;
+ }else{
+ sirenPin = ON;
+ alarmLed = !sirenPin;
+ }
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-os.lib Fri May 14 17:27:28 2021 +0000 @@ -0,0 +1,1 @@ +https://github.com/ARMmbed/mbed-os/#cf4f12a123c05fcae83fc56d76442015cb8a39e9
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/modules/arm_book_lib.h Fri May 14 17:27:28 2021 +0000
@@ -0,0 +1,176 @@
+/* Copyright 2020, Eric Pernia, Pablo Gomez and Ariel Lutemberg.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _ARM_BOOK_LIBRARY_H_
+#define _ARM_BOOK_LIBRARY_H_
+
+/*==================[inclusions]=============================================*/
+
+#include <cstdint>
+#include <mbed.h>
+
+/*==================[c++]====================================================*/
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*==================[macros]=================================================*/
+
+// Functional states
+#ifndef OFF
+#define OFF 0
+#endif
+#ifndef ON
+#define ON (!OFF)
+#endif
+
+// Electrical states
+#ifndef LOW
+#define LOW 0
+#endif
+#ifndef HIGH
+#define HIGH (!LOW)
+#endif
+
+// Logical states
+
+#ifndef FALSE
+#define FALSE 0
+#endif
+#ifndef TRUE
+#define TRUE (!FALSE)
+#endif
+
+#ifndef false
+#define false 0
+#endif
+#ifndef true
+#define true (!false)
+#endif
+
+// __I Defines 'read only' permissions: volatile const
+// __O Defines 'write only' permissions: volatile
+// __IO Defines 'read / write' permissions: volatile
+
+#define HW_REG_8_R(x) (*((__I uint8_t *)(x)))
+#define HW_REG_16_R(x) (*((__I uint16_t *)(x)))
+#define HW_REG_32_R(x) (*((__I uint32_t *)(x)))
+
+#define HW_REG_8_W(x) (*((__O uint8_t *)(x)))
+#define HW_REG_16_W(x) (*((__O uint16_t *)(x)))
+#define HW_REG_32_W(x) (*((__O uint32_t *)(x)))
+
+#define HW_REG_8_RW(x) (*((__IO uint8_t *)(x)))
+#define HW_REG_16_RW(x) (*((__IO uint16_t *)(x)))
+#define HW_REG_32_RW(x) (*((__IO uint32_t *)(x)))
+
+// Example:
+// #define REG_NAME (HW_REG_32_RW(0x4544555))
+
+/*==================[Function-like macros]===================================*/
+
+#define delay(ms) thread_sleep_for( ms )
+
+/*==================[typedef]================================================*/
+
+// ST Zio connector namings
+
+// CN7
+# define D16 PC_6
+# define D17 PB_15
+# define D18 PB_13
+# define D19 PB_12
+# define D20 PA_15
+# define D21 PC_7
+# define D22 PB_5
+# define D23 PB_3
+# define D24 PA_4
+# define D25 PB_4
+
+// CN10
+# define D26 PB_6
+# define D27 PB_2
+# define D28 PD_13
+# define D29 PD_12
+# define D30 PD_11
+# define D31 PE_2
+# define D32 PA_0
+# define D33 PB_0
+# define D34 PE_0
+# define D35 PB_11
+# define D36 PB_10
+# define D37 PE_15
+# define D38 PE_14
+# define D39 PE_12
+# define D40 PE_10
+# define D41 PE_7
+# define D42 PE_8
+
+// CN8
+# define D43 PC_8
+# define D44 PC_9
+# define D45 PC_10
+# define D46 PC_11
+# define D47 PC_12
+# define D48 PD_1
+# define D49 PG_2
+# define D50 PG_3
+
+// CN9
+# define D51 PD_7
+# define D52 PD_6
+# define D53 PD_5
+# define D54 PD_4
+# define D55 PD_3
+# define D56 PE_2
+# define D57 PE_4
+# define D58 PE_5
+# define D59 PE_6
+# define D60 PE_3
+# define D61 PF_8
+# define D62 PF_7
+# define D63 PF_9
+# define D64 PG_1
+# define D65 PG_0
+# define D66 PD_1
+# define D67 PD_0
+# define D68 PF_0
+# define D69 PF_1
+# define D70 PF_2
+# define D71 PA_7
+# define D72 NC
+
+/*==================[c++]====================================================*/
+#ifdef __cplusplus
+}
+#endif
+
+/*==================[end of file]============================================*/
+#endif // _ARM_BOOK_LIBRARY_H_
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/modules/date_and_time/date_and_time.cpp Fri May 14 17:27:28 2021 +0000
@@ -0,0 +1,48 @@
+//=====[Libraries]=============================================================
+
+#include "mbed.h"
+
+#include "date_and_time.h"
+
+//=====[Declaration of private defines]======================================
+
+//=====[Declaration of private data types]=====================================
+
+//=====[Declaration and initialization of public global objects]===============
+
+//=====[Declaration of external public global variables]=======================
+
+//=====[Declaration and initialization of public global variables]=============
+
+//=====[Declaration and initialization of private global variables]============
+
+//=====[Declarations (prototypes) of private functions]========================
+
+//=====[Implementations of public functions]===================================
+
+char* dateAndTimeRead()
+{
+ time_t epochSeconds;
+ epochSeconds = time(NULL);
+ return ctime(&epochSeconds);
+}
+
+void dateAndTimeWrite( int year, int month, int day,
+ int hour, int minute, int second )
+{
+ struct tm rtcTime;
+
+ rtcTime.tm_year = year - 1900;
+ rtcTime.tm_mon = month - 1;
+ rtcTime.tm_mday = day;
+ rtcTime.tm_hour = hour;
+ rtcTime.tm_min = minute;
+ rtcTime.tm_sec = second;
+
+ rtcTime.tm_isdst = -1;
+
+ set_time( mktime( &rtcTime ) );
+}
+
+//=====[Implementations of private functions]==================================
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/modules/date_and_time/date_and_time.h Fri May 14 17:27:28 2021 +0000 @@ -0,0 +1,21 @@ +//=====[#include guards - begin]=============================================== + +#ifndef _DATE_AND_TIME_H_ +#define _DATE_AND_TIME_H_ + +//=====[Libraries]============================================================= + +//=====[Declaration of public defines]======================================= + +//=====[Declaration of public data types]====================================== + +//=====[Declarations (prototypes) of public functions]========================= + +char* dateAndTimeRead(); + +void dateAndTimeWrite( int year, int month, int day, + int hour, int minute, int second ); + +//=====[#include guards - end]================================================= + +#endif // _DATE_AND_TIME_H_ \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/modules/display/display.cpp Fri May 14 17:27:28 2021 +0000
@@ -0,0 +1,357 @@
+//=====[Libraries]=============================================================
+
+#include "mbed.h"
+#include "arm_book_lib.h"
+#include "display.h"
+
+//=====[Declaration of private defines]========================================
+
+#define DISPLAY_IR_CLEAR_DISPLAY 0b00000001
+#define DISPLAY_IR_ENTRY_MODE_SET 0b00000100
+#define DISPLAY_IR_DISPLAY_CONTROL 0b00001000
+#define DISPLAY_IR_FUNCTION_SET 0b00100000
+#define DISPLAY_IR_SET_DDRAM_ADDR 0b10000000
+
+#define DISPLAY_IR_ENTRY_MODE_SET_INCREMENT 0b00000010
+#define DISPLAY_IR_ENTRY_MODE_SET_DECREMENT 0b00000000
+#define DISPLAY_IR_ENTRY_MODE_SET_SHIFT 0b00000001
+#define DISPLAY_IR_ENTRY_MODE_SET_NO_SHIFT 0b00000000
+
+#define DISPLAY_IR_DISPLAY_CONTROL_DISPLAY_ON 0b00000100
+#define DISPLAY_IR_DISPLAY_CONTROL_DISPLAY_OFF 0b00000000
+#define DISPLAY_IR_DISPLAY_CONTROL_CURSOR_ON 0b00000010
+#define DISPLAY_IR_DISPLAY_CONTROL_CURSOR_OFF 0b00000000
+#define DISPLAY_IR_DISPLAY_CONTROL_BLINK_ON 0b00000001
+#define DISPLAY_IR_DISPLAY_CONTROL_BLINK_OFF 0b00000000
+
+#define DISPLAY_IR_FUNCTION_SET_8BITS 0b00010000
+#define DISPLAY_IR_FUNCTION_SET_4BITS 0b00000000
+#define DISPLAY_IR_FUNCTION_SET_2LINES 0b00001000
+#define DISPLAY_IR_FUNCTION_SET_1LINE 0b00000000
+#define DISPLAY_IR_FUNCTION_SET_5x10DOTS 0b00000100
+#define DISPLAY_IR_FUNCTION_SET_5x8DOTS 0b00000000
+
+#define DISPLAY_20x4_LINE1_FIRST_CHARACTER_ADDRESS 0
+#define DISPLAY_20x4_LINE2_FIRST_CHARACTER_ADDRESS 64
+#define DISPLAY_20x4_LINE3_FIRST_CHARACTER_ADDRESS 20
+#define DISPLAY_20x4_LINE4_FIRST_CHARACTER_ADDRESS 84
+
+#define DISPLAY_RS_INSTRUCTION 0
+#define DISPLAY_RS_DATA 1
+
+#define DISPLAY_RW_WRITE 0
+#define DISPLAY_RW_READ 1
+
+#define DISPLAY_PIN_RS 4
+#define DISPLAY_PIN_RW 5
+#define DISPLAY_PIN_EN 6
+#define DISPLAY_PIN_D0 7
+#define DISPLAY_PIN_D1 8
+#define DISPLAY_PIN_D2 9
+#define DISPLAY_PIN_D3 10
+#define DISPLAY_PIN_D4 11
+#define DISPLAY_PIN_D5 12
+#define DISPLAY_PIN_D6 13
+#define DISPLAY_PIN_D7 14
+
+#define DISPLAY_PIN_A_PCF8574 3
+
+#define I2C1_SDA PB_9
+#define I2C1_SCL PB_8
+
+#define PCF8574_I2C_BUS_8BIT_WRITE_ADDRESS 78
+
+//=====[Declaration of private data types]=====================================
+
+typedef struct{
+ int address;
+ char data;
+ bool displayPin_RS;
+ bool displayPin_RW;
+ bool displayPin_EN;
+ bool displayPin_A;
+ bool displayPin_D4;
+ bool displayPin_D5;
+ bool displayPin_D6;
+ bool displayPin_D7;
+} pcf8574_t;
+
+//=====[Declaration and initialization of public global objects]===============
+
+DigitalOut displayD0( D0 );
+DigitalOut displayD1( D1 );
+DigitalOut displayD2( D2 );
+DigitalOut displayD3( D3 );
+DigitalOut displayD4( D4 );
+DigitalOut displayD5( D5 );
+DigitalOut displayD6( D6 );
+DigitalOut displayD7( D7 );
+DigitalOut displayRS( D8 );
+DigitalOut displayEN( D9 );
+
+I2C I2C_PCF8574( I2C1_SDA, I2C1_SCL );
+
+//=====[Declaration of external public global variables]=======================
+
+//=====[Declaration and initialization of public global variables]=============
+
+//=====[Declaration and initialization of private global variables]============
+
+static display_t display;
+static pcf8574_t pcf8574;
+static bool initial8BitCommunicationIsCompleted;
+
+//=====[Declarations (prototypes) of private functions]========================
+
+static void displayPinWrite( uint8_t pinName, int value );
+static void displayDataBusWrite( uint8_t dataByte );
+static void displayCodeWrite( bool type, uint8_t dataBus );
+
+//=====[Implementations of public functions]===================================
+
+void displayInit( displayConnection_t connection )
+{
+ display.connection = connection;
+
+ if( display.connection == DISPLAY_CONNECTION_I2C_PCF8574_IO_EXPANDER) {
+ pcf8574.address = PCF8574_I2C_BUS_8BIT_WRITE_ADDRESS;
+ pcf8574.data = 0b00000000;
+ I2C_PCF8574.frequency(100000);
+ displayPinWrite( DISPLAY_PIN_A_PCF8574, ON );
+ }
+
+ initial8BitCommunicationIsCompleted = FALSE;
+
+ delay( 50 );
+
+ displayCodeWrite( DISPLAY_RS_INSTRUCTION,
+ DISPLAY_IR_FUNCTION_SET |
+ DISPLAY_IR_FUNCTION_SET_8BITS );
+ delay( 5 );
+
+ displayCodeWrite( DISPLAY_RS_INSTRUCTION,
+ DISPLAY_IR_FUNCTION_SET |
+ DISPLAY_IR_FUNCTION_SET_8BITS );
+ delay( 1 );
+
+ displayCodeWrite( DISPLAY_RS_INSTRUCTION,
+ DISPLAY_IR_FUNCTION_SET |
+ DISPLAY_IR_FUNCTION_SET_8BITS );
+ delay( 1 );
+
+ switch( display.connection ) {
+ case DISPLAY_CONNECTION_GPIO_8BITS:
+ displayCodeWrite( DISPLAY_RS_INSTRUCTION,
+ DISPLAY_IR_FUNCTION_SET |
+ DISPLAY_IR_FUNCTION_SET_8BITS |
+ DISPLAY_IR_FUNCTION_SET_2LINES |
+ DISPLAY_IR_FUNCTION_SET_5x8DOTS );
+ delay( 1 );
+ break;
+
+ case DISPLAY_CONNECTION_GPIO_4BITS:
+ case DISPLAY_CONNECTION_I2C_PCF8574_IO_EXPANDER:
+ displayCodeWrite( DISPLAY_RS_INSTRUCTION,
+ DISPLAY_IR_FUNCTION_SET |
+ DISPLAY_IR_FUNCTION_SET_4BITS );
+ delay( 1 );
+
+ initial8BitCommunicationIsCompleted = TRUE;
+
+ displayCodeWrite( DISPLAY_RS_INSTRUCTION,
+ DISPLAY_IR_FUNCTION_SET |
+ DISPLAY_IR_FUNCTION_SET_4BITS |
+ DISPLAY_IR_FUNCTION_SET_2LINES |
+ DISPLAY_IR_FUNCTION_SET_5x8DOTS );
+ delay( 1 );
+ break;
+ }
+
+ displayCodeWrite( DISPLAY_RS_INSTRUCTION,
+ DISPLAY_IR_DISPLAY_CONTROL |
+ DISPLAY_IR_DISPLAY_CONTROL_DISPLAY_OFF |
+ DISPLAY_IR_DISPLAY_CONTROL_CURSOR_OFF |
+ DISPLAY_IR_DISPLAY_CONTROL_BLINK_OFF );
+ delay( 1 );
+
+ displayCodeWrite( DISPLAY_RS_INSTRUCTION,
+ DISPLAY_IR_CLEAR_DISPLAY );
+ delay( 1 );
+
+ displayCodeWrite( DISPLAY_RS_INSTRUCTION,
+ DISPLAY_IR_ENTRY_MODE_SET |
+ DISPLAY_IR_ENTRY_MODE_SET_INCREMENT |
+ DISPLAY_IR_ENTRY_MODE_SET_NO_SHIFT );
+ delay( 1 );
+
+ displayCodeWrite( DISPLAY_RS_INSTRUCTION,
+ DISPLAY_IR_DISPLAY_CONTROL |
+ DISPLAY_IR_DISPLAY_CONTROL_DISPLAY_ON |
+ DISPLAY_IR_DISPLAY_CONTROL_CURSOR_OFF |
+ DISPLAY_IR_DISPLAY_CONTROL_BLINK_OFF );
+ delay( 1 );
+}
+
+void displayCharPositionWrite( uint8_t charPositionX, uint8_t charPositionY )
+{
+ switch( charPositionY ) {
+ case 0:
+ displayCodeWrite( DISPLAY_RS_INSTRUCTION,
+ DISPLAY_IR_SET_DDRAM_ADDR |
+ ( DISPLAY_20x4_LINE1_FIRST_CHARACTER_ADDRESS +
+ charPositionX ) );
+ delay( 1 );
+ break;
+
+ case 1:
+ displayCodeWrite( DISPLAY_RS_INSTRUCTION,
+ DISPLAY_IR_SET_DDRAM_ADDR |
+ ( DISPLAY_20x4_LINE2_FIRST_CHARACTER_ADDRESS +
+ charPositionX ) );
+ delay( 1 );
+ break;
+
+ case 2:
+ displayCodeWrite( DISPLAY_RS_INSTRUCTION,
+ DISPLAY_IR_SET_DDRAM_ADDR |
+ ( DISPLAY_20x4_LINE3_FIRST_CHARACTER_ADDRESS +
+ charPositionX ) );
+ delay( 1 );
+ break;
+
+ case 3:
+ displayCodeWrite( DISPLAY_RS_INSTRUCTION,
+ DISPLAY_IR_SET_DDRAM_ADDR |
+ ( DISPLAY_20x4_LINE4_FIRST_CHARACTER_ADDRESS +
+ charPositionX ) );
+ delay( 1 );
+ break;
+ }
+}
+
+void displayStringWrite( char const * str )
+{
+ while (*str) {
+ displayCodeWrite(DISPLAY_RS_DATA, *str++);
+ }
+}
+
+//=====[Implementations of private functions]==================================
+
+static void displayCodeWrite( bool type, uint8_t dataBus )
+{
+ if ( type == DISPLAY_RS_INSTRUCTION )
+ displayPinWrite( DISPLAY_PIN_RS, DISPLAY_RS_INSTRUCTION);
+ else
+ displayPinWrite( DISPLAY_PIN_RS, DISPLAY_RS_DATA);
+ displayPinWrite( DISPLAY_PIN_RW, DISPLAY_RW_WRITE );
+ displayDataBusWrite( dataBus );
+}
+
+static void displayPinWrite( uint8_t pinName, int value )
+{
+ switch( display.connection ) {
+ case DISPLAY_CONNECTION_GPIO_8BITS:
+ switch( pinName ) {
+ case DISPLAY_PIN_D0: displayD0 = value; break;
+ case DISPLAY_PIN_D1: displayD1 = value; break;
+ case DISPLAY_PIN_D2: displayD2 = value; break;
+ case DISPLAY_PIN_D3: displayD3 = value; break;
+ case DISPLAY_PIN_D4: displayD4 = value; break;
+ case DISPLAY_PIN_D5: displayD5 = value; break;
+ case DISPLAY_PIN_D6: displayD6 = value; break;
+ case DISPLAY_PIN_D7: displayD7 = value; break;
+ case DISPLAY_PIN_RS: displayRS = value; break;
+ case DISPLAY_PIN_EN: displayEN = value; break;
+ case DISPLAY_PIN_RW: break;
+ default: break;
+ }
+ case DISPLAY_CONNECTION_GPIO_4BITS:
+ switch( pinName ) {
+ case DISPLAY_PIN_D4: displayD4 = value; break;
+ case DISPLAY_PIN_D5: displayD5 = value; break;
+ case DISPLAY_PIN_D6: displayD6 = value; break;
+ case DISPLAY_PIN_D7: displayD7 = value; break;
+ case DISPLAY_PIN_RS: displayRS = value; break;
+ case DISPLAY_PIN_EN: displayEN = value; break;
+ case DISPLAY_PIN_RW: break;
+ default: break;
+ }
+ break;
+
+ case DISPLAY_CONNECTION_I2C_PCF8574_IO_EXPANDER:
+ if ( value ) {
+ switch( pinName ) {
+ case DISPLAY_PIN_D4: pcf8574.displayPin_D4 = ON; break;
+ case DISPLAY_PIN_D5: pcf8574.displayPin_D5 = ON; break;
+ case DISPLAY_PIN_D6: pcf8574.displayPin_D6 = ON; break;
+ case DISPLAY_PIN_D7: pcf8574.displayPin_D7 = ON; break;
+ case DISPLAY_PIN_RS: pcf8574.displayPin_RS = ON; break;
+ case DISPLAY_PIN_EN: pcf8574.displayPin_EN = ON; break;
+ case DISPLAY_PIN_RW: pcf8574.displayPin_RW = ON; break;
+ case DISPLAY_PIN_A_PCF8574: pcf8574.displayPin_A = ON; break;
+ default: break;
+ }
+ }
+ else {
+ switch( pinName ) {
+ case DISPLAY_PIN_D4: pcf8574.displayPin_D4 = OFF; break;
+ case DISPLAY_PIN_D5: pcf8574.displayPin_D5 = OFF; break;
+ case DISPLAY_PIN_D6: pcf8574.displayPin_D6 = OFF; break;
+ case DISPLAY_PIN_D7: pcf8574.displayPin_D7 = OFF; break;
+ case DISPLAY_PIN_RS: pcf8574.displayPin_RS = OFF; break;
+ case DISPLAY_PIN_EN: pcf8574.displayPin_EN = OFF; break;
+ case DISPLAY_PIN_RW: pcf8574.displayPin_RW = OFF; break;
+ case DISPLAY_PIN_A_PCF8574: pcf8574.displayPin_A = OFF; break;
+ default: break;
+ }
+ }
+ pcf8574.data = 0b00000000;
+ if ( pcf8574.displayPin_RS ) pcf8574.data |= 0b00000001;
+ if ( pcf8574.displayPin_RW ) pcf8574.data |= 0b00000010;
+ if ( pcf8574.displayPin_EN ) pcf8574.data |= 0b00000100;
+ if ( pcf8574.displayPin_A ) pcf8574.data |= 0b00001000;
+ if ( pcf8574.displayPin_D4 ) pcf8574.data |= 0b00010000;
+ if ( pcf8574.displayPin_D5 ) pcf8574.data |= 0b00100000;
+ if ( pcf8574.displayPin_D6 ) pcf8574.data |= 0b01000000;
+ if ( pcf8574.displayPin_D7 ) pcf8574.data |= 0b10000000;
+ I2C_PCF8574.write( pcf8574.address, &pcf8574.data, 1);
+ break;
+ }
+}
+
+static void displayDataBusWrite( uint8_t dataBus )
+{
+ displayPinWrite( DISPLAY_PIN_EN, OFF );
+ displayPinWrite( DISPLAY_PIN_D7, dataBus & 0b10000000 );
+ displayPinWrite( DISPLAY_PIN_D6, dataBus & 0b01000000 );
+ displayPinWrite( DISPLAY_PIN_D5, dataBus & 0b00100000 );
+ displayPinWrite( DISPLAY_PIN_D4, dataBus & 0b00010000 );
+ switch( display.connection ) {
+ case DISPLAY_CONNECTION_GPIO_8BITS:
+ displayPinWrite( DISPLAY_PIN_D3, dataBus & 0b00001000 );
+ displayPinWrite( DISPLAY_PIN_D2, dataBus & 0b00000100 );
+ displayPinWrite( DISPLAY_PIN_D1, dataBus & 0b00000010 );
+ displayPinWrite( DISPLAY_PIN_D0, dataBus & 0b00000001 );
+ break;
+
+ case DISPLAY_CONNECTION_GPIO_4BITS:
+ case DISPLAY_CONNECTION_I2C_PCF8574_IO_EXPANDER:
+ if ( initial8BitCommunicationIsCompleted == TRUE) {
+ displayPinWrite( DISPLAY_PIN_EN, ON );
+ delay( 1 );
+ displayPinWrite( DISPLAY_PIN_EN, OFF );
+ delay( 1 );
+ displayPinWrite( DISPLAY_PIN_D7, dataBus & 0b00001000 );
+ displayPinWrite( DISPLAY_PIN_D6, dataBus & 0b00000100 );
+ displayPinWrite( DISPLAY_PIN_D5, dataBus & 0b00000010 );
+ displayPinWrite( DISPLAY_PIN_D4, dataBus & 0b00000001 );
+ }
+ break;
+
+ }
+ displayPinWrite( DISPLAY_PIN_EN, ON );
+ delay( 1 );
+ displayPinWrite( DISPLAY_PIN_EN, OFF );
+ delay( 1 );
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/modules/display/display.h Fri May 14 17:27:28 2021 +0000
@@ -0,0 +1,34 @@
+//=====[#include guards - begin]===============================================
+
+#ifndef _DISPLAY_H_
+#define _DISPLAY_H_
+
+//=====[Libraries]=============================================================
+
+#include "mbed.h"
+
+//=====[Declaration of public defines]=======================================
+
+//=====[Declaration of public data types]======================================
+
+typedef enum {
+ DISPLAY_CONNECTION_GPIO_4BITS,
+ DISPLAY_CONNECTION_GPIO_8BITS,
+ DISPLAY_CONNECTION_I2C_PCF8574_IO_EXPANDER,
+} displayConnection_t;
+
+typedef struct {
+ displayConnection_t connection;
+} display_t;
+
+//=====[Declarations (prototypes) of public functions]=========================
+
+void displayInit( displayConnection_t connection );
+
+void displayCharPositionWrite( uint8_t charPositionX, uint8_t charPositionY );
+
+void displayStringWrite( char const * str );
+
+//=====[#include guards - end]=================================================
+
+#endif // _DISPLAY_H_
\ No newline at end of file
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