CQ_I2C_book / Mbed 2 deprecated PCA9622

16-bit Fm+ I2C-bus 100 mA 40 V LED driver

Dependencies:   mbed

PCA9622.cpp@0:099730f5f776, 2015-02-04 (annotated)

Committer:
wataaki
Date:
Wed Feb 04 06:05:20 2015 +0000
Revision:
0:099730f5f776
Initial version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wataaki 0:099730f5f776 1 #include "mbed.h"
wataaki 0:099730f5f776 2 #include "PCA9622.h"
wataaki 0:099730f5f776 3
wataaki 0:099730f5f776 4 I2C i2c(p28,p27); // sda, scl
wataaki 0:099730f5f776 5 Serial pc(USBTX, USBRX); // tx, rx
wataaki 0:099730f5f776 6 char cmd[32];
wataaki 0:099730f5f776 7 int i, j;
wataaki 0:099730f5f776 8
wataaki 0:099730f5f776 9 void set_ch(char sel)
wataaki 0:099730f5f776 10 { // PCA9541のサンプル
wataaki 0:099730f5f776 11 // MST_0側の自分にスレーブ側の制御権を得る場合
wataaki 0:099730f5f776 12 cmd[0] = 1; // PCA9541 コマンドコード Cont Reg
wataaki 0:099730f5f776 13 i2c.write( 0xe2, cmd, 1); // Cont Regを指定
wataaki 0:099730f5f776 14 i2c.read( 0xe2, cmd, 1); // Cont Regを読込み
wataaki 0:099730f5f776 15 wait(0.1); // 0.1s待つ
wataaki 0:099730f5f776 16 switch(cmd[0] & 0xf)
wataaki 0:099730f5f776 17 {
wataaki 0:099730f5f776 18 case 0: // bus off, has control
wataaki 0:099730f5f776 19 case 1: // bus off, no control
wataaki 0:099730f5f776 20 case 5: // bus on, no control
wataaki 0:099730f5f776 21 cmd[0] = 1; // PCA9541 コマンドコード Cont Reg
wataaki 0:099730f5f776 22 cmd[1] = 4; // bus on, has control
wataaki 0:099730f5f776 23 i2c.write( 0xe2, cmd, 2); // Cont Regにcmd[1]を書込み
wataaki 0:099730f5f776 24 i2c.read( 0xe2, cmd, 1); // Cont Regを読込み
wataaki 0:099730f5f776 25 break;
wataaki 0:099730f5f776 26 case 2: // bus off, no control
wataaki 0:099730f5f776 27 case 3: // bus off, has control
wataaki 0:099730f5f776 28 case 6: // bus on, no control
wataaki 0:099730f5f776 29 cmd[0] = 1; // PCA9541 コマンドコード Cont Reg
wataaki 0:099730f5f776 30 cmd[1] = 5; // bus on, has control
wataaki 0:099730f5f776 31 i2c.write( 0xe2, cmd, 2); // Cont Regにcmd[1]を書込み
wataaki 0:099730f5f776 32 i2c.read( 0xe2, cmd, 1); // Cont Regを読込み
wataaki 0:099730f5f776 33 break;
wataaki 0:099730f5f776 34 case 9: // bus on, no control
wataaki 0:099730f5f776 35 case 0xc: // bus on, no control
wataaki 0:099730f5f776 36 case 0xd: // bus off, no control
wataaki 0:099730f5f776 37 cmd[0] = 1; // PCA9541 コマンドコード Cont Reg
wataaki 0:099730f5f776 38 cmd[1] = 0; // bus on, has control
wataaki 0:099730f5f776 39 i2c.write( 0xe2, cmd, 2); // Cont Regにcmd[1]を書込み
wataaki 0:099730f5f776 40 i2c.read( 0xe2, cmd, 1); // Cont Regを読込み
wataaki 0:099730f5f776 41 break;
wataaki 0:099730f5f776 42 case 0xa: // bus on, no control
wataaki 0:099730f5f776 43 case 0xe: // bus off, no control
wataaki 0:099730f5f776 44 case 0xf: // bus on, has control
wataaki 0:099730f5f776 45 cmd[0] = 1; // PCA9541 コマンドコード Cont Reg
wataaki 0:099730f5f776 46 cmd[1] = 1; // bus on, has control
wataaki 0:099730f5f776 47 i2c.write( 0xe2, cmd, 2); // Cont Regにcmd[1]を書込み
wataaki 0:099730f5f776 48 i2c.read( 0xe2, cmd, 1); // Cont Regを読込み
wataaki 0:099730f5f776 49 break;
wataaki 0:099730f5f776 50 default:
wataaki 0:099730f5f776 51 break;
wataaki 0:099730f5f776 52 }
wataaki 0:099730f5f776 53
wataaki 0:099730f5f776 54 cmd[0] = sel; // PCA9546 Cont Reg sel channel enabled
wataaki 0:099730f5f776 55 i2c.write( 0xe8, cmd, 1); // Send command string
wataaki 0:099730f5f776 56 }
wataaki 0:099730f5f776 57
wataaki 0:099730f5f776 58 int main ()
wataaki 0:099730f5f776 59 {
wataaki 0:099730f5f776 60 i2c.frequency(100000);
wataaki 0:099730f5f776 61 pc.printf("PCA9622 Sample Program\r\n");
wataaki 0:099730f5f776 62
wataaki 0:099730f5f776 63 set_ch(1); // PCA9622はch0に接続
wataaki 0:099730f5f776 64
wataaki 0:099730f5f776 65 // PCA9622
wataaki 0:099730f5f776 66 cmd[0] = MODE1;
wataaki 0:099730f5f776 67 cmd[1] = 0x0; // SLEEP = 0
wataaki 0:099730f5f776 68 i2c.write(PCA9622_ADDR, cmd, 2); // cmd[0]Regにcmd[1]を書込み
wataaki 0:099730f5f776 69
wataaki 0:099730f5f776 70 cmd[0] = LEDOUT0 + 0x80; // LEDOUT0, Auto incriment
wataaki 0:099730f5f776 71 cmd[1] = 0xaa; // LED3,2,1,0 10= PWM
wataaki 0:099730f5f776 72 cmd[2] = 0xaa; // LED7,6,5,4 10= PWM
wataaki 0:099730f5f776 73 cmd[3] = 0xaa; // LED11,10,9,8 10= PWM
wataaki 0:099730f5f776 74 cmd[4] = 0xaa; // LED15,14,13,12 10= PWM
wataaki 0:099730f5f776 75 i2c.write(PCA9622_ADDR, cmd, 5); // cmd[0]Regにcmd[1-4]を書込み
wataaki 0:099730f5f776 76
wataaki 0:099730f5f776 77 while(1)
wataaki 0:099730f5f776 78 {
wataaki 0:099730f5f776 79 if (i>15) i = 0;
wataaki 0:099730f5f776 80 cmd[0] = PWM0 + 0x80; // PWM0, Auto incriment
wataaki 0:099730f5f776 81 for(j=0; j<16; j++) cmd[j+1] = 0x0; // PWM = 0%
wataaki 0:099730f5f776 82 cmd[i+1] = 0xff; // PWM = 99.6%
wataaki 0:099730f5f776 83 i2c.write(PCA9622_ADDR, cmd, 17); // cmd[0]Regにcmd[1-16]を書込み
wataaki 0:099730f5f776 84 wait(0.5);
wataaki 0:099730f5f776 85 i++;
wataaki 0:099730f5f776 86 }
wataaki 0:099730f5f776 87 }
wataaki 0:099730f5f776 88