Diff: PCA9685.cpp

Revision:

2:429b0b439bc1

Parent:

1:7f3c3ac6b20b

--- a/PCA9685.cpp	Fri Jul 24 09:03:58 2015 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,62 +0,0 @@
-#include "PCA9685.h"
-#include "mbed.h"
-PCA9685::PCA9685(PinName sda, PinName scl, int addr) : i2c(sda, scl), _i2caddr(addr) {}
-
-void PCA9685::begin(void)
-{
-    reset();
-}
-
-void PCA9685::frequencyI2C(int freq)
-{
-    i2c.frequency(freq);
-}
-void PCA9685::write8(uint8_t address, uint8_t data)
-{
-    char cmd[2];
-    cmd[0] = address;
-    cmd[1] = data;
-    i2c.write(_i2caddr, cmd, 2);
-}
-
-char PCA9685::read8(char address)
-{
-    i2c.write(_i2caddr, &address, 1);
-    char rtn;
-    i2c.read(_i2caddr, &rtn, 1);
-    return rtn;
-}
-
-void PCA9685::reset(void)
-{
-    write8(PCA9685_MODE1, 0x0);
-}
-void PCA9685::setPrescale(uint8_t prescale) {
-    uint8_t oldmode = read8(PCA9685_MODE1);
-    uint8_t newmode = (oldmode&0x7F) | 0x10; // sleep
-    write8(PCA9685_MODE1, newmode); // go to sleep
-    wait_ms(5);
-    write8(PCA9685_PRESCALE, prescale); // set the prescaler
-    write8(PCA9685_MODE1, oldmode);
-    wait_ms(5);
-    write8(PCA9685_MODE1, oldmode | 0xa1);
-}
-void PCA9685::setPWMFreq(float freq)
-{
-    float prescaleval = 25000000;
-    prescaleval /= 4096;
-    prescaleval /= freq;
-    uint8_t prescale = floor(prescaleval  + 0.5) - 1;
-    setPrescale(prescale);
-}
-
-void PCA9685::setPWM(uint8_t num, uint16_t on, uint16_t off)
-{
-    char cmd[5];
-    cmd[0] = LED0_ON_L + 4 * num;
-    cmd[1] = on;
-    cmd[2] = on >> 8;
-    cmd[3] = off;
-    cmd[4] = off >> 8;
-    i2c.write(_i2caddr, cmd, 5);
-}