Nikola Cvetković / Mbed 2 deprecated 19E042PIM_V3_Z2

Program allows for a rectangle displayed on SSD1306-based OLED display to be moved by x- and y-axis uisng two user potentiometers.

Dependencies:   mbed Adafruit_GFX

main.cpp@1:2363995f603f, 2016-03-20 (annotated)

Committer:
joeata2wh
Date:
Sun Mar 20 23:48:48 2016 +0000
Revision:
1:2363995f603f
Parent:
0:befb557584fb
Child:
2:e90c47d4f358
working version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
joeata2wh 0:befb557584fb 1 /* Scan I2C bus on specified pins and prints out
joeata2wh 0:befb557584fb 2 * the address of all pins where a active responder
joeata2wh 0:befb557584fb 3 * is found.
joeata2wh 0:befb557584fb 4 *
joeata2wh 0:befb557584fb 5 * By Joe Elsworth CTO of A2WH
joeata2wh 0:befb557584fb 6 * Free use for al but no warranty, no promises.
joeata2wh 0:befb557584fb 7 * Don't forget 3K pullup sda,scl */
joeata2wh 0:befb557584fb 8
joeata2wh 0:befb557584fb 9 #include "mbed.h"
joeata2wh 0:befb557584fb 10
joeata2wh 0:befb557584fb 11
joeata2wh 0:befb557584fb 12 Serial pc(USBTX, USBRX);
joeata2wh 0:befb557584fb 13
joeata2wh 1:2363995f603f 14 #define D_SDA PB_7
joeata2wh 0:befb557584fb 15 #define D_SCL PB_6
joeata2wh 0:befb557584fb 16 // sda=PB7, scl=PB_6 Pins specific to Nucleo-F303K8
joeata2wh 0:befb557584fb 17 // must change pins to match your board.
joeata2wh 0:befb557584fb 18
joeata2wh 0:befb557584fb 19 I2C i2c(D_SDA, D_SCL);
joeata2wh 0:befb557584fb 20
joeata2wh 0:befb557584fb 21 DigitalOut myled(LED1);
joeata2wh 0:befb557584fb 22
joeata2wh 0:befb557584fb 23 void scanI2C() {
joeata2wh 0:befb557584fb 24 int address;
joeata2wh 0:befb557584fb 25 int ack;
joeata2wh 0:befb557584fb 26 for(address=1;address<127;address++) {
joeata2wh 0:befb557584fb 27 ack = i2c.write(address, "11", 1);
joeata2wh 0:befb557584fb 28 if (ack == 0) {
joeata2wh 0:befb557584fb 29 pc.printf("\tFound at %3d -- %3x\r\n", address,address);
joeata2wh 0:befb557584fb 30 }
joeata2wh 0:befb557584fb 31 wait(0.05);
joeata2wh 0:befb557584fb 32 }
joeata2wh 0:befb557584fb 33 }
joeata2wh 0:befb557584fb 34
joeata2wh 0:befb557584fb 35 int main() {
joeata2wh 0:befb557584fb 36 pc.baud(9600);
joeata2wh 0:befb557584fb 37 pc.printf("I2C scanner \r\n");
joeata2wh 0:befb557584fb 38 scanI2C();
joeata2wh 0:befb557584fb 39 pc.printf("Finished Scan\r\n");
joeata2wh 0:befb557584fb 40
joeata2wh 0:befb557584fb 41 ack = i2c.write(71, "11", 1);
joeata2wh 0:befb557584fb 42
joeata2wh 0:befb557584fb 43 while(1) {
joeata2wh 0:befb557584fb 44 wait(5.0);
joeata2wh 0:befb557584fb 45 myled = !myled;
joeata2wh 0:befb557584fb 46 }
joeata2wh 0:befb557584fb 47 }
joeata2wh 0:befb557584fb 48