Bertl 2014 Übung
Dependencies: mbed
Fork of _B14Test8 by
main.cpp@0:951a35674581, 2014-11-18 (annotated)
- Committer:
- Enenkel
- Date:
- Tue Nov 18 14:17:57 2014 +0000
- Revision:
- 0:951a35674581
- Child:
- 1:d1a664b263dc
Lampentest via I2C 9555
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Enenkel | 0:951a35674581 | 1 | #include "mbed.h" // Softwarestand: 19.1.2014 |
Enenkel | 0:951a35674581 | 2 | /*** Portkonfiguration ***/ |
Enenkel | 0:951a35674581 | 3 | Serial pc(USBTX, USBRX); // tx, rx |
Enenkel | 0:951a35674581 | 4 | I2C i2c(p28,p27); |
Enenkel | 0:951a35674581 | 5 | |
Enenkel | 0:951a35674581 | 6 | /*** Funktionsdefinitionen ***/ |
Enenkel | 0:951a35674581 | 7 | Ticker sekunden; |
Enenkel | 0:951a35674581 | 8 | Ticker blink; |
Enenkel | 0:951a35674581 | 9 | |
Enenkel | 0:951a35674581 | 10 | /*** Variablendefinitionen ***/ |
Enenkel | 0:951a35674581 | 11 | // int x = 1 ; |
Enenkel | 0:951a35674581 | 12 | // int y = 0 ; |
Enenkel | 0:951a35674581 | 13 | // bool var1 = false; |
Enenkel | 0:951a35674581 | 14 | |
Enenkel | 0:951a35674581 | 15 | const int addr = 0x40; // I2C-Adresse PCA9555 |
Enenkel | 0:951a35674581 | 16 | char cmd[3]; // Datenarray für I2C |
Enenkel | 0:951a35674581 | 17 | |
Enenkel | 0:951a35674581 | 18 | /*** Funktionen ***/ |
Enenkel | 0:951a35674581 | 19 | |
Enenkel | 0:951a35674581 | 20 | int main() |
Enenkel | 0:951a35674581 | 21 | { |
Enenkel | 0:951a35674581 | 22 | /*** I2C Konfigurationen ***/ |
Enenkel | 0:951a35674581 | 23 | i2c.frequency(40000); // I2C Frequenz 40kHz |
Enenkel | 0:951a35674581 | 24 | |
Enenkel | 0:951a35674581 | 25 | cmd[0] = 0x06; |
Enenkel | 0:951a35674581 | 26 | cmd[1] = 0x00; |
Enenkel | 0:951a35674581 | 27 | i2c.write(addr, cmd, 2); // Define Port0 = Out |
Enenkel | 0:951a35674581 | 28 | /*** Hauptprogramm - Endlosschleife ***/ |
Enenkel | 0:951a35674581 | 29 | while(1) |
Enenkel | 0:951a35674581 | 30 | { |
Enenkel | 0:951a35674581 | 31 | cmd[0] = 0x02; |
Enenkel | 0:951a35674581 | 32 | cmd[1] = 0xFE; // Alle LED ON |
Enenkel | 0:951a35674581 | 33 | i2c.write(addr, cmd, 2); // Def. Port0 = 0x00 |
Enenkel | 0:951a35674581 | 34 | wait(0.5); |
Enenkel | 0:951a35674581 | 35 | |
Enenkel | 0:951a35674581 | 36 | cmd[0] = 0x02; // |
Enenkel | 0:951a35674581 | 37 | cmd[1] = 0xFD; // Alle LED OFF |
Enenkel | 0:951a35674581 | 38 | i2c.write(addr, cmd, 2); // Def. Port0 = 0xFF |
Enenkel | 0:951a35674581 | 39 | wait(0.5); |
Enenkel | 0:951a35674581 | 40 | |
Enenkel | 0:951a35674581 | 41 | cmd[0] = 0x02; // |
Enenkel | 0:951a35674581 | 42 | cmd[1] = 0xFB; // Alle LED OFF |
Enenkel | 0:951a35674581 | 43 | i2c.write(addr, cmd, 2); // Def. Port0 = 0xFF |
Enenkel | 0:951a35674581 | 44 | wait(0.5); |
Enenkel | 0:951a35674581 | 45 | |
Enenkel | 0:951a35674581 | 46 | cmd[0] = 0x02; // |
Enenkel | 0:951a35674581 | 47 | cmd[1] = 0xF7; // Alle LED OFF |
Enenkel | 0:951a35674581 | 48 | i2c.write(addr, cmd, 2); // Def. Port0 = 0xFF |
Enenkel | 0:951a35674581 | 49 | wait(0.5); |
Enenkel | 0:951a35674581 | 50 | |
Enenkel | 0:951a35674581 | 51 | cmd[0] = 0x02; // |
Enenkel | 0:951a35674581 | 52 | cmd[1] = 0xEF; // Alle LED OFF |
Enenkel | 0:951a35674581 | 53 | i2c.write(addr, cmd, 2); // Def. Port0 = 0xFF |
Enenkel | 0:951a35674581 | 54 | wait(0.5); |
Enenkel | 0:951a35674581 | 55 | |
Enenkel | 0:951a35674581 | 56 | cmd[0] = 0x02; // |
Enenkel | 0:951a35674581 | 57 | cmd[1] = 0xDF; // Alle LED OFF |
Enenkel | 0:951a35674581 | 58 | i2c.write(addr, cmd, 2); // Def. Port0 = 0xFF |
Enenkel | 0:951a35674581 | 59 | wait(0.5); |
Enenkel | 0:951a35674581 | 60 | |
Enenkel | 0:951a35674581 | 61 | cmd[0] = 0x02; // |
Enenkel | 0:951a35674581 | 62 | cmd[1] = 0xBF; // Alle LED OFF |
Enenkel | 0:951a35674581 | 63 | i2c.write(addr, cmd, 2); // Def. Port0 = 0xFF |
Enenkel | 0:951a35674581 | 64 | wait(0.5); |
Enenkel | 0:951a35674581 | 65 | |
Enenkel | 0:951a35674581 | 66 | cmd[0] = 0x02; // |
Enenkel | 0:951a35674581 | 67 | cmd[1] = 0x7F; // Alle LED OFF |
Enenkel | 0:951a35674581 | 68 | i2c.write(addr, cmd, 2); // Def. Port0 = 0xFF |
Enenkel | 0:951a35674581 | 69 | wait(0.5); |
Enenkel | 0:951a35674581 | 70 | |
Enenkel | 0:951a35674581 | 71 | cmd[0] = 0x02; // |
Enenkel | 0:951a35674581 | 72 | cmd[1] = 0x00; // Alle LED OFF |
Enenkel | 0:951a35674581 | 73 | i2c.write(addr, cmd, 2); // Def. Port0 = 0xFF |
Enenkel | 0:951a35674581 | 74 | wait(2); |
Enenkel | 0:951a35674581 | 75 | } |
Enenkel | 0:951a35674581 | 76 | } |