Alexander Lang
A port of the arduino voltmeter example for the mbed using the 4.3' PCT 4d systems touch screen display. Uses the mbed_genie library ported from the arduino visie-genie library by Christian B
A test of the arduino voltmeter example using the 4.3' PCT 4d systems touch screen display.
This example program uses the mbed_genie library ported from the arduino Visi-Genie library by Christian B
The display serial TX and RX pins are connected to pin 9 and pin 10 of the mbed microcontroller
The reset pin is not connected as reset function is not implemented
Pin 15 of the mbed has a potentiometer wiper connected to it. The other connections of the potentiometer are connected to +3.3V and 0V - this is to provide some data for the demonstration and to ensure that we don't apply too much voltage to the analogue input pin
For setting up the display in Visie-Genie -
The display has an angular meter object, a LED digits object, two button objects and three static text objects.
The 4dButton0 (On) and the 4dButton1 (Off) button has been set to report on change within Visi-Genie object inspector
The serial baud rate of the display must be set to 115200 baud for this example to work. Ensure you have the settings correct in Visi-Genie when exporting the display program
The mbed program sends digital voltage readings to the LED digits and angular meter of the display module.
The volt readings will only be displayed if the appropriate button on the display is set!
I have written up a more in depth explanation on my blog here:
http://langster1980.blogspot.co.uk/2014/01/ulcd-43-display-mbed-tutorial.html
mbed_genie.h
- Committer:
- langster1980
- Date:
- 2014-01-05
- Revision:
- 1:9e8db53e04c9
- Parent:
- 0:1ab681bd453e
File content as of revision 1:9e8db53e04c9:
#undef GENIE_DEBUG
#define GENIE_VERSION "GenieMbed 17-Nov-2013"
// Genie commands & replys:
#define GENIE_ACK 0x06
#define GENIE_NAK 0x15
#define TIMEOUT_PERIOD 500
#define RESYNC_PERIOD 100
#define GENIE_READ_OBJ 0
#define GENIE_WRITE_OBJ 1
#define GENIE_WRITE_STR 2
#define GENIE_WRITE_STRU 3
#define GENIE_WRITE_CONTRAST 4
#define GENIE_REPORT_OBJ 5
#define GENIE_REPORT_EVENT 7
// Objects
// the manual says:
// Note: Object IDs may change with future releases; it is not
// advisable to code their values as constants.
#define GENIE_OBJ_DIPSW 0
#define GENIE_OBJ_KNOB 1
#define GENIE_OBJ_ROCKERSW 2
#define GENIE_OBJ_ROTARYSW 3
#define GENIE_OBJ_SLIDER 4
#define GENIE_OBJ_TRACKBAR 5
#define GENIE_OBJ_WINBUTTON 6
#define GENIE_OBJ_ANGULAR_METER 7
#define GENIE_OBJ_COOL_GAUGE 8
#define GENIE_OBJ_CUSTOM_DIGITS 9
#define GENIE_OBJ_FORM 10
#define GENIE_OBJ_GAUGE 11
#define GENIE_OBJ_IMAGE 12
#define GENIE_OBJ_KEYBOARD 13
#define GENIE_OBJ_LED 14
#define GENIE_OBJ_LED_DIGITS 15
#define GENIE_OBJ_METER 16
#define GENIE_OBJ_STRINGS 17
#define GENIE_OBJ_THERMOMETER 18
#define GENIE_OBJ_USER_LED 19
#define GENIE_OBJ_VIDEO 20
#define GENIE_OBJ_STATIC_TEXT 21
#define GENIE_OBJ_SOUND 22
#define GENIE_OBJ_TIMER 23
#define GENIE_OBJ_SPECTRUM 24
#define GENIE_OBJ_SCOPE 25
#define GENIE_OBJ_TANK 26
#define GENIE_OBJ_USERIMAGES 27
#define GENIE_OBJ_PINOUTPUT 28
#define GENIE_OBJ_PININPUT 29
#define GENIE_OBJ_4DBUTTON 30
#define GENIE_OBJ_ANIBUTTON 31
#define GENIE_OBJ_COLORPICKER 32
#define GENIE_OBJ_USERBUTTON 33
// Structure to store replys returned from a display
#define GENIE_FRAME_SIZE 6
struct genieFrameReportObj {
uint8_t cmd;
uint8_t object;
uint8_t index;
uint8_t data_msb;
uint8_t data_lsb;
};
/////////////////////////////////////////////////////////////////////
// The Genie frame definition
//
// The union allows the data to be referenced as an array of uint8_t
// or a structure of type genieFrameReportObj, eg
//
// genieFrame f;
// f.bytes[4];
// f.reportObject.data_lsb
//
// both methods get the same byte
//
union genieFrame {
uint8_t bytes[GENIE_FRAME_SIZE];
genieFrameReportObj reportObject;
};
#define MAX_GENIE_EVENTS 16 // MUST be a power of 2
#define MAX_GENIE_FATALS 10
struct genieEventQueueStruct {
genieFrame frames[MAX_GENIE_EVENTS];
uint8_t rd_index;
uint8_t wr_index;
uint8_t n_events;
};
typedef void (*geniePutCharFuncPtr) (uint8_t c, uint32_t baud);
typedef uint16_t (*genieGetCharFuncPtr) (void);
typedef void (*genieUserEventHandlerPtr) (void);
#define ERROR_NONE 0
#define ERROR_TIMEOUT -1 // 255 0xFF
#define ERROR_NOHANDLER -2 // 254 0xFE
#define ERROR_NOCHAR -3 // 253 0xFD
#define ERROR_NAK -4 // 252 0xFC
#define ERROR_REPLY_OVR -5 // 251 0xFB
#define ERROR_RESYNC -6 // 250 0xFA
#define ERROR_NODISPLAY -7 // 249 0xF9
#define ERROR_BAD_CS -8 // 248 0xF8
#define GENIE_LINK_IDLE 0
#define GENIE_LINK_WFAN 1 // waiting for Ack or Nak
#define GENIE_LINK_WF_RXREPORT 2 // waiting for a report frame
#define GENIE_LINK_RXREPORT 3 // receiving a report frame
#define GENIE_LINK_RXEVENT 4 // receiving an event frame
#define GENIE_LINK_SHDN 5
#define GENIE_EVENT_NONE 0
#define GENIE_EVENT_RXCHAR 1
#ifndef TRUE
#define TRUE (1==1)
#define FALSE (!TRUE)
#endif
void SetupGenie(void);
void genieAttachEventHandler (genieUserEventHandlerPtr handler);
extern bool genieDequeueEvent (genieFrame * buff);
extern bool genieEventIs (genieFrame * e, uint8_t cmd, uint8_t object, uint8_t index);
extern uint16_t genieGetEventData (genieFrame * e);
extern uint16_t genieWriteObject (uint16_t object, uint16_t index, uint16_t data);
extern uint16_t genieWriteStr (uint16_t index, char *string);
extern void genieWriteContrast (uint16_t value);