Revision 3:970c2fa6ef3f, committed 2019-10-25

Comitter:

lant19

Date:

Fri Oct 25 02:12:02 2019 +0000

Parent:

2:73237ebf0640

Commit message:

with address

Changed in this revision

diff -r 73237ebf0640 -r 970c2fa6ef3f PCA9685.cpp
--- a/PCA9685.cpp	Thu Oct 24 08:21:43 2019 +0000
+++ b/PCA9685.cpp	Fri Oct 25 02:12:02 2019 +0000
@@ -4,7 +4,8 @@
 //定义引脚与地址
 void PCA9685::begin(void)//初始化
 {
-    reset();
+    reset(0x80);
+    reset(0x82);
 }
 
 void PCA9685::frequencyI2C(int freq)//初始化
@@ -27,11 +28,13 @@
     return rtn;
 }
 
-void PCA9685::reset(void)//复位
+void PCA9685::reset(int addr4)//复位
 {
+     _i2caddr=addr4;
     write8(PCA9685_MODE1, 0x0);
 }
-void PCA9685::setPrescale(uint8_t prescale) {    
+void PCA9685::setPrescale(uint8_t prescale,int addr2) {    
+    _i2caddr=addr2;
     uint8_t oldmode = read8(PCA9685_MODE1);
     uint8_t newmode = (oldmode&0x7F) | 0x10; // sleep
     write8(PCA9685_MODE1, newmode); // go to sleep
@@ -41,13 +44,14 @@
     wait_ms(5);
     write8(PCA9685_MODE1, oldmode | 0xa1);
 }
-void PCA9685::setPWMFreq(float freq) //设置频率
+void PCA9685::setPWMFreq(float freq,int addr3) //设置频率
 {
+    _i2caddr=addr3;
     float prescaleval = 25000000;
     prescaleval /= 4096;
     prescaleval /= freq;
     uint8_t prescale = floor(prescaleval  + 0.5) - 1;
-    setPrescale(prescale);
+    setPrescale(prescale,addr3);
 }
 
 void PCA9685::setPWM(uint8_t num, uint16_t on, uint16_t off,int addr)

diff -r 73237ebf0640 -r 970c2fa6ef3f PCA9685.h
--- a/PCA9685.h	Thu Oct 24 08:21:43 2019 +0000
+++ b/PCA9685.h	Fri Oct 25 02:12:02 2019 +0000
@@ -77,17 +77,17 @@
 class PCA9685
 {
 public:
-    PCA9685(PinName sda, PinName scl);//定义pca9685 地址为1+A5+A4+A3+A2+A1+A0+rw rw写为0 读为1
+    PCA9685(PinName sda, PinName scl);//定义pca9685 地址为1+A5+A4+A3+A2+A1+A0+rw rw写为0 读为1 10000010  0x82
     void frequencyI2C(int freq);
     void begin(void); //初始化
-    void reset(void); //复位
-    void setPrescale(uint8_t prescale);//设置预缩放
+    void reset(int addr4); //复位
+    void setPrescale(uint8_t prescale,int addr2);//设置预缩放
     /** set prescale
      *
      *  @param prescale: set scale for the PWM frequency
      *
      */
-    void setPWMFreq(float freq);//设置PWM频率 单位hz
+    void setPWMFreq(float freq,int addr3);//设置PWM频率 单位hz
     /** Set frequency
       *
       * @param frequency in Hz