Biorobotics 7 / Mbed 2 deprecated State_Machine

State machine

Dependencies:   mbed Adafruit_GFX BioroboticsMotorControl MODSERIAL BioroboticsEMGFilter

Screen.h@6:bfc6e68774f5, 2018-10-30 (annotated)

Committer:
brass_phoenix
Date:
Tue Oct 30 12:19:51 2018 +0000
Revision:
6:bfc6e68774f5
Parent:
5:2632dfc8454c
Child:
15:f65b4566193e
+ Additional text on screen now works.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
brass_phoenix 3:4b19b6cf6cc7 1 #pragma once
brass_phoenix 3:4b19b6cf6cc7 2
brass_phoenix 3:4b19b6cf6cc7 3 #include "mbed.h"
brass_phoenix 4:5a44ab7e94b3 4 #include <string>
brass_phoenix 3:4b19b6cf6cc7 5
brass_phoenix 3:4b19b6cf6cc7 6 // Uncomment this in the adafruit config.h to turn off the builtin splash
brass_phoenix 3:4b19b6cf6cc7 7 //#define NO_SPLASH_ADAFRUIT
brass_phoenix 3:4b19b6cf6cc7 8 // Uncomment this in the adafruit config.h to enable all functionality
brass_phoenix 3:4b19b6cf6cc7 9 //#define GFX_WANT_ABSTRACTS
brass_phoenix 3:4b19b6cf6cc7 10
brass_phoenix 3:4b19b6cf6cc7 11 #include "Adafruit_SSD1306.h"
brass_phoenix 3:4b19b6cf6cc7 12
brass_phoenix 3:4b19b6cf6cc7 13
brass_phoenix 3:4b19b6cf6cc7 14 class Screen
brass_phoenix 3:4b19b6cf6cc7 15 {
brass_phoenix 3:4b19b6cf6cc7 16 private:
brass_phoenix 3:4b19b6cf6cc7 17 I2C i2c;
brass_phoenix 3:4b19b6cf6cc7 18 Adafruit_SSD1306_I2c oled;
brass_phoenix 3:4b19b6cf6cc7 19 public:
brass_phoenix 3:4b19b6cf6cc7 20 // The screen we use doesn't have a reset pin, but it needs one anyway.
brass_phoenix 3:4b19b6cf6cc7 21 // Use a pin we don't use.
brass_phoenix 3:4b19b6cf6cc7 22 Screen(PinName sda, PinName scl, PinName reset):
brass_phoenix 3:4b19b6cf6cc7 23 i2c(sda, scl),
brass_phoenix 3:4b19b6cf6cc7 24 oled(i2c, reset) {
brass_phoenix 3:4b19b6cf6cc7 25
brass_phoenix 3:4b19b6cf6cc7 26 // according to the spec the max bitrate for the SSD1308 is 400 kbit/s
brass_phoenix 3:4b19b6cf6cc7 27 i2c.frequency(400000);
brass_phoenix 3:4b19b6cf6cc7 28
brass_phoenix 4:5a44ab7e94b3 29 clear_display();
brass_phoenix 4:5a44ab7e94b3 30 }
brass_phoenix 4:5a44ab7e94b3 31
brass_phoenix 4:5a44ab7e94b3 32 void clear_display() {
brass_phoenix 3:4b19b6cf6cc7 33 oled.clearDisplay();
brass_phoenix 3:4b19b6cf6cc7 34 display();
brass_phoenix 3:4b19b6cf6cc7 35 }
brass_phoenix 3:4b19b6cf6cc7 36
brass_phoenix 3:4b19b6cf6cc7 37 void display() {
brass_phoenix 3:4b19b6cf6cc7 38 // Apparently the display only updates every 2 "display" calls.
brass_phoenix 3:4b19b6cf6cc7 39 // This is a bug in the library.
brass_phoenix 3:4b19b6cf6cc7 40 oled.display();
brass_phoenix 3:4b19b6cf6cc7 41 oled.display();
brass_phoenix 3:4b19b6cf6cc7 42 }
brass_phoenix 4:5a44ab7e94b3 43
brass_phoenix 5:2632dfc8454c 44 // State names can be a maximum of 17 characters long.
brass_phoenix 4:5a44ab7e94b3 45 void display_state_name(string name) {
brass_phoenix 4:5a44ab7e94b3 46 // Clear a previous title.
brass_phoenix 4:5a44ab7e94b3 47 oled.setTextCursor(0, 0);
brass_phoenix 5:2632dfc8454c 48 oled.printf(" ");
brass_phoenix 4:5a44ab7e94b3 49 oled.setTextCursor(0, 0);
brass_phoenix 4:5a44ab7e94b3 50 oled.printf("- ");
brass_phoenix 4:5a44ab7e94b3 51 oled.printf(name.c_str());
brass_phoenix 6:bfc6e68774f5 52 oled.printf(" -\r\n");
brass_phoenix 4:5a44ab7e94b3 53 display();
brass_phoenix 4:5a44ab7e94b3 54 }
brass_phoenix 3:4b19b6cf6cc7 55
brass_phoenix 3:4b19b6cf6cc7 56 // Returns a direct handle to the screen.
brass_phoenix 3:4b19b6cf6cc7 57 // Be carefull while using the handle.
brass_phoenix 6:bfc6e68774f5 58 Adafruit_SSD1306_I2c* get_screen_handle() {
brass_phoenix 6:bfc6e68774f5 59 return &oled;
brass_phoenix 3:4b19b6cf6cc7 60 }
brass_phoenix 3:4b19b6cf6cc7 61
brass_phoenix 3:4b19b6cf6cc7 62 };