24-bit Fm+ I2C-bus 100 mA 40 V LED driver
Dependencies: mbed
PCA9626B.cpp@0:e573ba46ffc6, 2015-02-04 (annotated)
- Committer:
- wataaki
- Date:
- Wed Feb 04 06:06:42 2015 +0000
- Revision:
- 0:e573ba46ffc6
Initial version
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
wataaki | 0:e573ba46ffc6 | 1 | #include "mbed.h" |
wataaki | 0:e573ba46ffc6 | 2 | #include "PCA9626B.h" |
wataaki | 0:e573ba46ffc6 | 3 | |
wataaki | 0:e573ba46ffc6 | 4 | I2C i2c(p28,p27); // sda, scl |
wataaki | 0:e573ba46ffc6 | 5 | Serial pc(USBTX, USBRX); // tx, rx |
wataaki | 0:e573ba46ffc6 | 6 | //LM75B tmp(p28,p27); |
wataaki | 0:e573ba46ffc6 | 7 | char cmd[32]; |
wataaki | 0:e573ba46ffc6 | 8 | int i; |
wataaki | 0:e573ba46ffc6 | 9 | |
wataaki | 0:e573ba46ffc6 | 10 | void set_ch(char sel) |
wataaki | 0:e573ba46ffc6 | 11 | { // PCA9541のサンプル |
wataaki | 0:e573ba46ffc6 | 12 | // MST_0側の自分にスレーブ側の制御権を得る場合 |
wataaki | 0:e573ba46ffc6 | 13 | cmd[0] = 1; // PCA9541 コマンドコード Cont Reg |
wataaki | 0:e573ba46ffc6 | 14 | i2c.write( 0xe2, cmd, 1); // Cont Regを指定 |
wataaki | 0:e573ba46ffc6 | 15 | i2c.read( 0xe2, cmd, 1); // Cont Regを読込み |
wataaki | 0:e573ba46ffc6 | 16 | wait(0.1); // 0.1s待つ |
wataaki | 0:e573ba46ffc6 | 17 | switch(cmd[0] & 0xf) |
wataaki | 0:e573ba46ffc6 | 18 | { |
wataaki | 0:e573ba46ffc6 | 19 | case 0: // bus off, has control |
wataaki | 0:e573ba46ffc6 | 20 | case 1: // bus off, no control |
wataaki | 0:e573ba46ffc6 | 21 | case 5: // bus on, no control |
wataaki | 0:e573ba46ffc6 | 22 | cmd[0] = 1; // PCA9541 コマンドコード Cont Reg |
wataaki | 0:e573ba46ffc6 | 23 | cmd[1] = 4; // bus on, has control |
wataaki | 0:e573ba46ffc6 | 24 | i2c.write( 0xe2, cmd, 2); // Cont Regにcmd[1]を書込み |
wataaki | 0:e573ba46ffc6 | 25 | i2c.read( 0xe2, cmd, 1); // Cont Regを読込み |
wataaki | 0:e573ba46ffc6 | 26 | break; |
wataaki | 0:e573ba46ffc6 | 27 | case 2: // bus off, no control |
wataaki | 0:e573ba46ffc6 | 28 | case 3: // bus off, has control |
wataaki | 0:e573ba46ffc6 | 29 | case 6: // bus on, no control |
wataaki | 0:e573ba46ffc6 | 30 | cmd[0] = 1; // PCA9541 コマンドコード Cont Reg |
wataaki | 0:e573ba46ffc6 | 31 | cmd[1] = 5; // bus on, has control |
wataaki | 0:e573ba46ffc6 | 32 | i2c.write( 0xe2, cmd, 2); // Cont Regにcmd[1]を書込み |
wataaki | 0:e573ba46ffc6 | 33 | i2c.read( 0xe2, cmd, 1); // Cont Regを読込み |
wataaki | 0:e573ba46ffc6 | 34 | break; |
wataaki | 0:e573ba46ffc6 | 35 | case 9: // bus on, no control |
wataaki | 0:e573ba46ffc6 | 36 | case 0xc: // bus on, no control |
wataaki | 0:e573ba46ffc6 | 37 | case 0xd: // bus off, no control |
wataaki | 0:e573ba46ffc6 | 38 | cmd[0] = 1; // PCA9541 コマンドコード Cont Reg |
wataaki | 0:e573ba46ffc6 | 39 | cmd[1] = 0; // bus on, has control |
wataaki | 0:e573ba46ffc6 | 40 | i2c.write( 0xe2, cmd, 2); // Cont Regにcmd[1]を書込み |
wataaki | 0:e573ba46ffc6 | 41 | i2c.read( 0xe2, cmd, 1); // Cont Regを読込み |
wataaki | 0:e573ba46ffc6 | 42 | break; |
wataaki | 0:e573ba46ffc6 | 43 | case 0xa: // bus on, no control |
wataaki | 0:e573ba46ffc6 | 44 | case 0xe: // bus off, no control |
wataaki | 0:e573ba46ffc6 | 45 | case 0xf: // bus on, has control |
wataaki | 0:e573ba46ffc6 | 46 | cmd[0] = 1; // PCA9541 コマンドコード Cont Reg |
wataaki | 0:e573ba46ffc6 | 47 | cmd[1] = 1; // bus on, has control |
wataaki | 0:e573ba46ffc6 | 48 | i2c.write( 0xe2, cmd, 2); // Cont Regにcmd[1]を書込み |
wataaki | 0:e573ba46ffc6 | 49 | i2c.read( 0xe2, cmd, 1); // Cont Regを読込み |
wataaki | 0:e573ba46ffc6 | 50 | break; |
wataaki | 0:e573ba46ffc6 | 51 | default: |
wataaki | 0:e573ba46ffc6 | 52 | break; |
wataaki | 0:e573ba46ffc6 | 53 | } |
wataaki | 0:e573ba46ffc6 | 54 | |
wataaki | 0:e573ba46ffc6 | 55 | cmd[0] = sel; // PCA9546 Cont Reg sel channel enabled |
wataaki | 0:e573ba46ffc6 | 56 | i2c.write( 0xe8, cmd, 1); // Send command string |
wataaki | 0:e573ba46ffc6 | 57 | } |
wataaki | 0:e573ba46ffc6 | 58 | |
wataaki | 0:e573ba46ffc6 | 59 | int main () |
wataaki | 0:e573ba46ffc6 | 60 | { |
wataaki | 0:e573ba46ffc6 | 61 | i2c.frequency(100000); |
wataaki | 0:e573ba46ffc6 | 62 | pc.printf("PCA9626B Sample Program\r\n"); |
wataaki | 0:e573ba46ffc6 | 63 | |
wataaki | 0:e573ba46ffc6 | 64 | set_ch(1); // PCA9626Bはch0に接続 |
wataaki | 0:e573ba46ffc6 | 65 | |
wataaki | 0:e573ba46ffc6 | 66 | // PCA9626B |
wataaki | 0:e573ba46ffc6 | 67 | cmd[0] = MODE1; // MODE1 |
wataaki | 0:e573ba46ffc6 | 68 | cmd[1] = 0x0; // SLEEP = 0 |
wataaki | 0:e573ba46ffc6 | 69 | i2c.write(PCA9626B_ADDR, cmd, 2); // cmd[0]Regにcmd[1]を書込み |
wataaki | 0:e573ba46ffc6 | 70 | |
wataaki | 0:e573ba46ffc6 | 71 | cmd[0] = LEDOUT0 + 0x80; // LEDOUT0, Auto incriment |
wataaki | 0:e573ba46ffc6 | 72 | cmd[1] = 0xaa; // LED3,2,1,0 10= PWM |
wataaki | 0:e573ba46ffc6 | 73 | cmd[2] = 0xaa; // LED7,6,5,4 10= PWM |
wataaki | 0:e573ba46ffc6 | 74 | cmd[3] = 0xaa; // LED11,10,9,8 10= PWM |
wataaki | 0:e573ba46ffc6 | 75 | cmd[4] = 0xaa; // LED15,14,13,12 10= PWM |
wataaki | 0:e573ba46ffc6 | 76 | cmd[5] = 0xaa; // LED19,18,17,16 10= PWM |
wataaki | 0:e573ba46ffc6 | 77 | cmd[6] = 0xaa; // LED23,22,21,20 10= PWM |
wataaki | 0:e573ba46ffc6 | 78 | i2c.write( 0x8, cmd, 7); // cmd[0]Regにcmd[1-6]を書込み |
wataaki | 0:e573ba46ffc6 | 79 | |
wataaki | 0:e573ba46ffc6 | 80 | |
wataaki | 0:e573ba46ffc6 | 81 | cmd[0] = PWM0 + 0x80; // PWM0, Auto incriment |
wataaki | 0:e573ba46ffc6 | 82 | for(i=0; i<24; i++) cmd[i+1] = 0x80; // PWM = 50% |
wataaki | 0:e573ba46ffc6 | 83 | i2c.write(PCA9626B_ADDR, cmd, 25); // cmd[0]Regにcmd[1-25]を書込み |
wataaki | 0:e573ba46ffc6 | 84 | |
wataaki | 0:e573ba46ffc6 | 85 | while(1) |
wataaki | 0:e573ba46ffc6 | 86 | { |
wataaki | 0:e573ba46ffc6 | 87 | if (i>30) i = 7; // LTR_0_ON |
wataaki | 0:e573ba46ffc6 | 88 | cmd[0] = 0x1c; // CHASE |
wataaki | 0:e573ba46ffc6 | 89 | cmd[1] = i++; // LTR_x_ON |
wataaki | 0:e573ba46ffc6 | 90 | i2c.write(PCA9626B_ADDR, cmd, 2); // cmd[0]Regにcmd[1]を書込み |
wataaki | 0:e573ba46ffc6 | 91 | wait(0.5); |
wataaki | 0:e573ba46ffc6 | 92 | } |
wataaki | 0:e573ba46ffc6 | 93 | } |
wataaki | 0:e573ba46ffc6 | 94 | |
wataaki | 0:e573ba46ffc6 | 95 |