CQ_I2C_book
24-bit Fm+ I2C-bus 100 mA 40 V LED driver
Dependencies: mbed
Revision 0:e573ba46ffc6, committed 2015-02-04
- Comitter:
- wataaki
- Date:
- Wed Feb 04 06:06:42 2015 +0000
- Commit message:
- Initial version
Changed in this revision
diff -r 000000000000 -r e573ba46ffc6 PCA9626B.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/PCA9626B.cpp Wed Feb 04 06:06:42 2015 +0000
@@ -0,0 +1,95 @@
+#include "mbed.h"
+#include "PCA9626B.h"
+
+I2C i2c(p28,p27); // sda, scl
+Serial pc(USBTX, USBRX); // tx, rx
+//LM75B tmp(p28,p27);
+ char cmd[32];
+int i;
+
+void set_ch(char sel)
+{ // PCA9541のサンプル
+ // MST_0側の自分にスレーブ側の制御権を得る場合
+ cmd[0] = 1; // PCA9541 コマンドコード Cont Reg
+ i2c.write( 0xe2, cmd, 1); // Cont Regを指定
+ i2c.read( 0xe2, cmd, 1); // Cont Regを読込み
+ wait(0.1); // 0.1s待つ
+ switch(cmd[0] & 0xf)
+ {
+ case 0: // bus off, has control
+ case 1: // bus off, no control
+ case 5: // bus on, no control
+ cmd[0] = 1; // PCA9541 コマンドコード Cont Reg
+ cmd[1] = 4; // bus on, has control
+ i2c.write( 0xe2, cmd, 2); // Cont Regにcmd[1]を書込み
+ i2c.read( 0xe2, cmd, 1); // Cont Regを読込み
+ break;
+ case 2: // bus off, no control
+ case 3: // bus off, has control
+ case 6: // bus on, no control
+ cmd[0] = 1; // PCA9541 コマンドコード Cont Reg
+ cmd[1] = 5; // bus on, has control
+ i2c.write( 0xe2, cmd, 2); // Cont Regにcmd[1]を書込み
+ i2c.read( 0xe2, cmd, 1); // Cont Regを読込み
+ break;
+ case 9: // bus on, no control
+ case 0xc: // bus on, no control
+ case 0xd: // bus off, no control
+ cmd[0] = 1; // PCA9541 コマンドコード Cont Reg
+ cmd[1] = 0; // bus on, has control
+ i2c.write( 0xe2, cmd, 2); // Cont Regにcmd[1]を書込み
+ i2c.read( 0xe2, cmd, 1); // Cont Regを読込み
+ break;
+ case 0xa: // bus on, no control
+ case 0xe: // bus off, no control
+ case 0xf: // bus on, has control
+ cmd[0] = 1; // PCA9541 コマンドコード Cont Reg
+ cmd[1] = 1; // bus on, has control
+ i2c.write( 0xe2, cmd, 2); // Cont Regにcmd[1]を書込み
+ i2c.read( 0xe2, cmd, 1); // Cont Regを読込み
+ break;
+ default:
+ break;
+ }
+
+ cmd[0] = sel; // PCA9546 Cont Reg sel channel enabled
+ i2c.write( 0xe8, cmd, 1); // Send command string
+}
+
+int main ()
+{
+ i2c.frequency(100000);
+ pc.printf("PCA9626B Sample Program\r\n");
+
+ set_ch(1); // PCA9626Bはch0に接続
+
+ // PCA9626B
+ cmd[0] = MODE1; // MODE1
+ cmd[1] = 0x0; // SLEEP = 0
+ i2c.write(PCA9626B_ADDR, cmd, 2); // cmd[0]Regにcmd[1]を書込み
+
+ cmd[0] = LEDOUT0 + 0x80; // LEDOUT0, Auto incriment
+ cmd[1] = 0xaa; // LED3,2,1,0 10= PWM
+ cmd[2] = 0xaa; // LED7,6,5,4 10= PWM
+ cmd[3] = 0xaa; // LED11,10,9,8 10= PWM
+ cmd[4] = 0xaa; // LED15,14,13,12 10= PWM
+ cmd[5] = 0xaa; // LED19,18,17,16 10= PWM
+ cmd[6] = 0xaa; // LED23,22,21,20 10= PWM
+ i2c.write( 0x8, cmd, 7); // cmd[0]Regにcmd[1-6]を書込み
+
+
+ cmd[0] = PWM0 + 0x80; // PWM0, Auto incriment
+ for(i=0; i<24; i++) cmd[i+1] = 0x80; // PWM = 50%
+ i2c.write(PCA9626B_ADDR, cmd, 25); // cmd[0]Regにcmd[1-25]を書込み
+
+ while(1)
+ {
+ if (i>30) i = 7; // LTR_0_ON
+ cmd[0] = 0x1c; // CHASE
+ cmd[1] = i++; // LTR_x_ON
+ i2c.write(PCA9626B_ADDR, cmd, 2); // cmd[0]Regにcmd[1]を書込み
+ wait(0.5);
+ }
+}
+
+
diff -r 000000000000 -r e573ba46ffc6 PCA9626B.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/PCA9626B.h Wed Feb 04 06:06:42 2015 +0000 @@ -0,0 +1,41 @@ +#define PCA9626B_ADDR 0x8 + +#define MODE1 0x00 +#define MODE2 0x01 +#define PWM0 0x02 +#define PWM1 0x03 +#define PWM2 0x04 +#define PWM3 0x05 +#define PWM4 0x06 +#define PWM5 0x07 +#define PWM6 0x08 +#define PWM7 0x09 +#define PWM8 0x0a +#define PWM9 0x0b +#define PWM10 0x0c +#define PWM11 0x0d +#define PWM12 0x0e +#define PWM13 0x0f +#define PWM14 0x10 +#define PWM15 0x11 +#define PWM16 0x12 +#define PWM17 0x13 +#define PWM18 0x14 +#define PWM19 0x15 +#define PWM20 0x16 +#define PWM21 0x17 +#define PWM22 0x18 +#define PWM23 0x19 +#define GRPPWM 0x1a +#define GRPFREQ 0x1b +#define CHASE 0x1c +#define LEDOUT0 0x1d +#define LEDOUT1 0x1e +#define LEDOUT2 0x1f +#define LEDOUT3 0x20 +#define LEDOUT4 0x21 +#define LEDOUT5 0x22 +#define SUBADR1 0x23 +#define SUBADR2 0x24 +#define SUBADR3 0x25 +#define ALLCALLADR 0x26
diff -r 000000000000 -r e573ba46ffc6 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Feb 04 06:06:42 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/552587b429a1 \ No newline at end of file