CQ_I2C_book
16-channel Fm+ I2C-bus 57 mA/20 V constant current LED driver
Dependencies: mbed
Revision 0:a872e4dd8ec3, committed 2015-02-04
- Comitter:
- wataaki
- Date:
- Wed Feb 04 06:09:08 2015 +0000
- Commit message:
- Initial version
Changed in this revision
diff -r 000000000000 -r a872e4dd8ec3 PCA9955A.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/PCA9955A.cpp Wed Feb 04 06:09:08 2015 +0000
@@ -0,0 +1,180 @@
+#include "mbed.h"
+#include "PCA9955A.h"
+
+I2C i2c(p28,p27); // sda, scl
+Serial pc(USBTX, USBRX); // tx, rx
+char cmd[32];
+int i, j, k;
+int sw;
+
+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("PCA9955A Sample Program\r\n");
+
+ set_ch(1); // PCA9955Aはch0に接続
+
+ // PCA9955A
+ while(1)
+ {
+ pc.printf("シーケンシャル … 1, グラデーション … 2 ? \r\n");
+ pc.scanf("%d", &sw);
+ pc.printf("%d\r\n", sw);
+ switch (sw)
+ {
+ case 1:
+ pc.printf("シーケンシャル Sample Start\r\n");
+
+ cmd[0] = MODE1;
+ cmd[1] = 0x0; // SLEEP = 0
+ i2c.write(PCA9955A_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
+ i2c.write(PCA9955A_ADDR, cmd, 5); // cmd[0]Regにcmd[1-4]を書込み
+
+ cmd[0] = IREF0 + 0x80; // IREF0, Auto incriment
+ for(i=0; i<16; i++) cmd[i+1] = 0x80; // all IREF = 50%
+ i2c.write(PCA9955A_ADDR, cmd, 17); // cmd[0]Regにcmd[1-16]を書込み
+
+ for(k=0; k<3; k++) // 3回繰返す
+ {
+ for(i=0; i<16; i++) // チャネル0～15まで一つずつ点灯
+ {
+ cmd[0] = PWM0 + 0x80; // PWM0, Auto incriment
+ for(j=0; j<16; j++) cmd[j+1] = 0x0; // all LED PWM = 0%
+ cmd[i+1] = 0xff; // iチャネルのLED PWM = 99.6%
+ i2c.write(PCA9955A_ADDR, cmd, 17); // cmd[0]Regにcmd[1-16]を書込み
+ wait(0.5);
+ }
+ }
+ pc.printf("シーケンシャル Sample End\r\n");
+ break;
+ case 2:
+ pc.printf("グラデーション Sample Start\r\n");
+
+ cmd[0] = MODE1;
+ cmd[1] = 0x0; // SLEEP = 0
+ i2c.write(PCA9955A_ADDR, cmd, 2); // cmd[0]Regにcmd[1]を書込み
+
+ cmd[0] = LEDOUT0 + 0x80; // LEDOUT0, Auto incriment
+ cmd[1] = 0x55; // LED3,2,1,0 01= ON
+ cmd[2] = 0x05; // LED7,6 00= OFF LED5,4 01= ON
+ cmd[3] = 0x00; // LED11,10,9,8 00= OFF
+ cmd[4] = 0x00; // LED15,14,13,12 00= OFF
+ i2c.write(PCA9955A_ADDR, cmd, 5); // cmd[0]Regにcmd[1-4]を書込み
+
+/* cmd[0] = PWMALL;
+ cmd[1] = 0xFF; // PWM = 99.6%
+ i2c.write(PCA9955A_ADDR, cmd, 2); // cmd[0]Regにcmd[1]を書込み
+*/
+ cmd[0] = GRAD_GRP_SEL1;
+ cmd[1] = 0x50; // LED3, 4 = GRP0
+ i2c.write(PCA9955A_ADDR, cmd, 2); // cmd[0]Regにcmd[1]を書込み
+
+ cmd[0] = IREFALL; //
+ cmd[1] = 0x1; // あとでIREF_GRP0で設定するので1以上であればよい
+ i2c.write(PCA9955A_ADDR, cmd, 2); // cmd[0]Regにcmd[1]を書込み
+/* cmd[0] = IREF4; //
+ cmd[1] = 0x1; // Idrv = 240 * 40uA(Rext = 5.6k)=9.6mA
+ i2c.write(PCA9955A_ADDR, cmd, 2); // cmd[0]Regにcmd[1]を書込み
+*/
+ cmd[0] = GRAD_MODE_SEL0;
+ cmd[1] = 0x31; // LED0, 4, 5 = Gradation
+ i2c.write(PCA9955A_ADDR, cmd, 2); // cmd[0]Regにcmd[1]を書込み
+
+ cmd[0] = GRAD_GRP_SEL0;
+ cmd[1] = 0x0; // LED0, 1, 2, 3 = GRP0
+ i2c.write(PCA9955A_ADDR, cmd, 2); // cmd[0]Regにcmd[1]を書込み
+
+
+ cmd[0] = IREF_GRP0;
+ cmd[1] = 0xF0; // Idrv = 240 * 40uA(Rext = 5.6k)=9.6mA
+ i2c.write(PCA9955A_ADDR, cmd, 2); // cmd[0]Regにcmd[1]を書込み
+
+ cmd[0] = STEP_TIME_GRP0;
+ cmd[1] = 0x3F; // 0.5ms * 64 = 32ms
+ i2c.write(PCA9955A_ADDR, cmd, 2); // cmd[0]Regにcmd[1]を書込み
+
+ cmd[0] = RAMP_RATE_GRP0;
+ cmd[1] = 0xc0 + 0x31; // Ramp up/down ON, Ramp rate = 50
+ i2c.write(PCA9955A_ADDR, cmd, 2); // cmd[0]Regにcmd[1]を書込み
+
+ cmd[0] = HOLD_CNTL_GRP0;
+ cmd[1] = 0xc0 + (0x1 << 3) + 0x2; // Hold ON/OFF ON, ON = 0.25s, OFF = 0.5s
+ i2c.write(PCA9955A_ADDR, cmd, 2); // cmd[0]Regにcmd[1]を書込み
+
+ cmd[0] = GRAD_CNTL;
+ cmd[1] = 0x3; // Gradation ON, Continuous
+ i2c.write(PCA9955A_ADDR, cmd, 2); // cmd[0]Regにcmd[1]を書込み
+
+ wait(15); // 15s 待つ
+
+ cmd[0] = GRAD_CNTL;
+ cmd[1] = 0x0; // Gradation OFF
+ i2c.write(PCA9955A_ADDR, cmd, 2); // cmd[0]Regにcmd[1]を書込み
+
+ cmd[0] = GRAD_MODE_SEL0;
+ cmd[1] = 0x0; // LED0, 4, 5 = Normal
+ i2c.write(PCA9955A_ADDR, cmd, 2); // cmd[0]Regにcmd[1]を書込み
+
+ pc.printf("グラデーション Sample End\r\n");
+ break;
+ default:
+ break;
+ }
+ }
+}
+
diff -r 000000000000 -r a872e4dd8ec3 PCA9955A.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/PCA9955A.h Wed Feb 04 06:09:08 2015 +0000 @@ -0,0 +1,77 @@ +//#define PCA9955_ADDR 0xEC +#define PCA9955A_ADDR 0x02 + +#define MODE1 0x00 +#define MODE2 0x01 +#define LEDOUT0 0x02 +#define LEDOUT1 0x03 +#define LEDOUT2 0x04 +#define LEDOUT3 0x05 +#define GRPPWM 0x06 +#define GRPFREQ 0x07 +#define PWM0 0x08 +#define PWM1 0x09 +#define PWM2 0x0A +#define PWM3 0x0B +#define PWM4 0x0C +#define PWM5 0x0D +#define PWM6 0x0E +#define PWM7 0x0F +#define PWM8 0x10 +#define PWM9 0x11 +#define PWM10 0x12 +#define PWM11 0x13 +#define PWM12 0x14 +#define PWM13 0x15 +#define PWM14 0x16 +#define PWM15 0x17 +#define IREF0 0x18 +#define IREF1 0x19 +#define IREF2 0x1A +#define IREF3 0x1B +#define IREF4 0x1C +#define IREF5 0x1D +#define IREF6 0x1E +#define IREF7 0x1F +#define IREF8 0x20 +#define IREF9 0x21 +#define IREF10 0x22 +#define IREF11 0x23 +#define IREF12 0x24 +#define IREF13 0x25 +#define IREF14 0x26 +#define IREF15 0x27 +#define RAMP_RATE_GRP0 0x28 +#define STEP_TIME_GRP0 0x29 +#define HOLD_CNTL_GRP0 0x2A +#define IREF_GRP0 0x2B +#define RAMP_RATE_GRP1 0x2C +#define STEP_TIME_GRP1 0x2D +#define HOLD_CNTL_GRP1 0x2E +#define IREF_GRP1 0x2F +#define RAMP_RATE_GRP2 0x30 +#define STEP_TIME_GRP2 0x31 +#define HOLD_CNTL_GRP2 0x32 +#define IREF_GRP2 0x33 +#define RAMP_RATE_GRP3 0x34 +#define STEP_TIME_GRP3 0x35 +#define HOLD_CNTL_GRP3 0x36 +#define IREF_GRP3 0x37 +#define GRAD_MODE_SEL0 0x38 +#define GRAD_MODE_SEL1 0x39 +#define GRAD_GRP_SEL0 0x3A +#define GRAD_GRP_SEL1 0x3B +#define GRAD_GRP_SEL2 0x3C +#define GRAD_GRP_SEL3 0x3D +#define GRAD_CNTL 0x3E +#define OFFSET 0x3F +#define SUBADR1 0x40 +#define SUBADR2 0x41 +#define SUBADR3 0x42 +#define ALLCALLADR 0x43 +#define PWMALL 0x44 +#define IREFALL 0x45 +#define EFLAG0 0x46 +#define EFLAG1 0x47 +#define EFLAG2 0x48 +#define EFLAG3 0x49
diff -r 000000000000 -r a872e4dd8ec3 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Feb 04 06:09:08 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/552587b429a1 \ No newline at end of file