C++ file for display control
Dependencies: 4DGL mbed ConfigFile
Fork of 4DGLtest by
keyboard.cpp@3:f7bce78b04c1, 2014-06-26 (annotated)
- Committer:
- WillemBraat
- Date:
- Thu Jun 26 11:41:45 2014 +0000
- Revision:
- 3:f7bce78b04c1
- Child:
- 6:904d00252480
CDU Display code file
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
WillemBraat | 3:f7bce78b04c1 | 1 | /* Keyboard chip TCA8418 control */ |
WillemBraat | 3:f7bce78b04c1 | 2 | #include "mbed.h" |
WillemBraat | 3:f7bce78b04c1 | 3 | #include "keyboard.h" |
WillemBraat | 3:f7bce78b04c1 | 4 | |
WillemBraat | 3:f7bce78b04c1 | 5 | extern int key_hit_ID; |
WillemBraat | 3:f7bce78b04c1 | 6 | //extern mbos CDU_OS; |
WillemBraat | 3:f7bce78b04c1 | 7 | |
WillemBraat | 3:f7bce78b04c1 | 8 | //CDU Keyboard communications KEYBOARD_INT |
WillemBraat | 3:f7bce78b04c1 | 9 | InterruptIn CDU_KB_INT( p5 ); //Set CDU keyboard interrupt line. |
WillemBraat | 3:f7bce78b04c1 | 10 | I2C CDU_KB(p28, p27); //Communication lines to keyboard chip |
WillemBraat | 3:f7bce78b04c1 | 11 | |
WillemBraat | 3:f7bce78b04c1 | 12 | //CDU Keyboard LEDS |
WillemBraat | 3:f7bce78b04c1 | 13 | DigitalOut EXEC( p12 ); |
WillemBraat | 3:f7bce78b04c1 | 14 | DigitalOut FAIL( p17 ); |
WillemBraat | 3:f7bce78b04c1 | 15 | DigitalOut DSPY( p18 ); |
WillemBraat | 3:f7bce78b04c1 | 16 | DigitalOut MSG( p19 ); |
WillemBraat | 3:f7bce78b04c1 | 17 | DigitalOut OFST( p20 ); |
WillemBraat | 3:f7bce78b04c1 | 18 | |
WillemBraat | 3:f7bce78b04c1 | 19 | //CDU background lighting |
WillemBraat | 3:f7bce78b04c1 | 20 | AnalogIn BGL_POT( p15 ); //background light control potmeter |
WillemBraat | 3:f7bce78b04c1 | 21 | PwmOut BGL_LED( p21 ); //PWM output |
WillemBraat | 3:f7bce78b04c1 | 22 | |
WillemBraat | 3:f7bce78b04c1 | 23 | /*void CDU_KB_INT_ON() |
WillemBraat | 3:f7bce78b04c1 | 24 | { |
WillemBraat | 3:f7bce78b04c1 | 25 | |
WillemBraat | 3:f7bce78b04c1 | 26 | } |
WillemBraat | 3:f7bce78b04c1 | 27 | */ |
WillemBraat | 3:f7bce78b04c1 | 28 | |
WillemBraat | 3:f7bce78b04c1 | 29 | void CDU_KB_COMM_INIT() |
WillemBraat | 3:f7bce78b04c1 | 30 | { //initialize communication with TCA84818 |
WillemBraat | 3:f7bce78b04c1 | 31 | CDU_KB.write(CDU_KB_WRITE); //initiate write cycle |
WillemBraat | 3:f7bce78b04c1 | 32 | //intialize all registers from TCA8418 here |
WillemBraat | 3:f7bce78b04c1 | 33 | CDU_KB.read(CDU_KB_READ); //start reading from TCA4818 |
WillemBraat | 3:f7bce78b04c1 | 34 | } |
WillemBraat | 3:f7bce78b04c1 | 35 | |
WillemBraat | 3:f7bce78b04c1 | 36 | void CDU_KB_GET_KEY_TASK() |
WillemBraat | 3:f7bce78b04c1 | 37 | { |
WillemBraat | 3:f7bce78b04c1 | 38 | CDU_KB.write(CDU_KB_READ); //initiate read cycle |
WillemBraat | 3:f7bce78b04c1 | 39 | key_hit_ID = CDU_KB.read(CDU_KB_READ) ; //read key value |
WillemBraat | 3:f7bce78b04c1 | 40 | //CDU_OS.SetEvent(KEY_EVENT,SEND_KEYMESSAGE_TASK_ID ); //Set event key to wakeup task |
WillemBraat | 3:f7bce78b04c1 | 41 | } |
WillemBraat | 3:f7bce78b04c1 | 42 | |
WillemBraat | 3:f7bce78b04c1 | 43 | void CDU_KB_INT_START() |
WillemBraat | 3:f7bce78b04c1 | 44 | { |
WillemBraat | 3:f7bce78b04c1 | 45 | CDU_KB_INT.mode( PullUp ); |
WillemBraat | 3:f7bce78b04c1 | 46 | CDU_KB_INT.fall(&CDU_KB_GET_KEY_TASK); |
WillemBraat | 3:f7bce78b04c1 | 47 | } |
WillemBraat | 3:f7bce78b04c1 | 48 | |
WillemBraat | 3:f7bce78b04c1 | 49 | void SET_BGL_INTENSITY( int nVal ) |
WillemBraat | 3:f7bce78b04c1 | 50 | { |
WillemBraat | 3:f7bce78b04c1 | 51 | //AnalogIn BGL_POT( p15 ); //background light control potmeter. Returns a value between 0.0 and 1.0 |
WillemBraat | 3:f7bce78b04c1 | 52 | //PwmOut BGL_LED( p21 ); //PWM output |
WillemBraat | 3:f7bce78b04c1 | 53 | //calculate required brightness in percentage from 0%-100% |
WillemBraat | 3:f7bce78b04c1 | 54 | //nVal 255 --> calculate brightness from potmeter value |
WillemBraat | 3:f7bce78b04c1 | 55 | //nVal = 0 --> switch off backlight |
WillemBraat | 3:f7bce78b04c1 | 56 | //nVal = 100 --> switch on backlight max |
WillemBraat | 3:f7bce78b04c1 | 57 | |
WillemBraat | 3:f7bce78b04c1 | 58 | switch (nVal) |
WillemBraat | 3:f7bce78b04c1 | 59 | { |
WillemBraat | 3:f7bce78b04c1 | 60 | case 0: |
WillemBraat | 3:f7bce78b04c1 | 61 | { |
WillemBraat | 3:f7bce78b04c1 | 62 | //switch off backlighting |
WillemBraat | 3:f7bce78b04c1 | 63 | BGL_LED.pulsewidth( 0.0 ); |
WillemBraat | 3:f7bce78b04c1 | 64 | break; |
WillemBraat | 3:f7bce78b04c1 | 65 | } |
WillemBraat | 3:f7bce78b04c1 | 66 | case 100: |
WillemBraat | 3:f7bce78b04c1 | 67 | { |
WillemBraat | 3:f7bce78b04c1 | 68 | //switch on backlighting |
WillemBraat | 3:f7bce78b04c1 | 69 | BGL_LED.pulsewidth( 100.0 ); |
WillemBraat | 3:f7bce78b04c1 | 70 | break; |
WillemBraat | 3:f7bce78b04c1 | 71 | } |
WillemBraat | 3:f7bce78b04c1 | 72 | case 255: |
WillemBraat | 3:f7bce78b04c1 | 73 | { |
WillemBraat | 3:f7bce78b04c1 | 74 | //calculate percentage from potmeter value |
WillemBraat | 3:f7bce78b04c1 | 75 | BGL_LED.pulsewidth( 0.0 + 100*BGL_POT ); |
WillemBraat | 3:f7bce78b04c1 | 76 | } |
WillemBraat | 3:f7bce78b04c1 | 77 | } |
WillemBraat | 3:f7bce78b04c1 | 78 | } |