Kevin Kent
/
XVHE_HID
IVSC Project
Revision 0:960d250e49b2, committed 2012-05-17
- Comitter:
- kevinkent
- Date:
- Thu May 17 23:11:08 2012 +0000
- Child:
- 1:82f2ef52759e
- Commit message:
- got mcp working
;
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/MCP4661.cpp Thu May 17 23:11:08 2012 +0000 @@ -0,0 +1,126 @@ +/* mbed MCP4661 DigiPot Driver Library + * + * Copyright (c) 2012, Kevin Kent + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + + +#include "MCP4661.h" +#include "mbed.h" + +/* + Constructor, pin names for I2C and the I2C address of the device + */ +MCP4661::MCP4661(PinName sda, PinName scl, int addr) + : _i2c(sda, scl) { + + _i2c.frequency(1000000); + + _addr = addr; + +} + + +int MCP4661::SetValue (int wiper, int value) { + int reg; + if (wiper == 0) {reg = MCP4661_VOL_WIPER0;} + if (wiper == 1) { + reg = MCP4661_VOL_WIPER1; + reg = (reg << 4 ); + } + reg |= MCP4661_WR; + _write(reg, value); + return(0); +} +int MCP4661::SetMode (int mask, int mode) { + if ( (mode < 0) || (mode > 3) ) { + return(1); + } else { + for (int i=0 ; i < 16 ; i++ ) { + + // if this matches, set the LED to the mode + if (mask & (0x1 << i)) { + SetLed(i,mode); + } + } + } + return(0); +} + + + +/* + led is in the range 0-15 + mode is inthe range 0-3 + */ +int MCP4661::SetLed(int led, int mode) { + + int reg = 0; + int offset = (led % 4); + + printf("\nSetLed(%d,%d)\n", led, mode); + + // makesure mode is within bounds + if ( (mode < 0) || (mode > 3) ) { + printf("Error : Invalid mode supplied\n"); + return(1); + } + + // determine which register this is, + + + // read the current status of the register + char regval = _read(reg); + + // clear the two bit slice at the calculated offset + regval &= ~(0x3 << (2 * offset)); + + // now OR in the mode, shifted by 2*offset + regval |= (mode << (2 * offset)); + + // write the new value back + _write(reg, regval); + + return(0); +} + + + +// private functions for low level IO + +void MCP4661::_write(int reg, int data) { + char args[2]; + args[0] = reg; + args[1] = data; + _i2c.write(_addr, args,2); +} + +int MCP4661::_read(int reg) { + char args[2]; + args[0] = reg; + _i2c.write(_addr, args, 1); + _i2c.read(_addr, args, 1); + return(args[0]); +} + + + + +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/MCP4661.h Thu May 17 23:11:08 2012 +0000 @@ -0,0 +1,69 @@ +/* mbed MCP4661 DigiPot Driver Library + * + * Copyright (c) 2012, Kevin Kent Trane US Inc + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef MCP4661_H +#define MCP4661_H + +#include "mbed.h" + +// register names +#define MCP4661_VOL_WIPER0 0 +#define MCP4661_VOL_WIPER1 1 +#define MCP4661_NV_WIPER0 2 +#define MCP4661_NV_WIPER1 3 +#define MCP4661_REG_TCON 4 +#define MCP4661_REG_STATUS 5 +#define MCP4661_EEPROM_0 6 +// #define MCP4661_EEPROM1 7 +// The Data EEPROM is 0x6 to 0xf + + +// Command modes +#define MCP4661_WR 0 +#define MODE_ON 1 +#define MODE_PWM0 2 +#define MODE_PWM1 3 + +class MCP4661 { + +public: + + MCP4661(PinName sda, PinName scl, int addr); + + int SetLed (int led, int mode); + int SetMode (int mask, int mode); + int Duty (int channel, float duty); + int Period (int channel, float period); + int SetValue (int wiper, int value); + +protected: + + void _write(int reg, int data); + int _read(int reg); + int _addr; + I2C _i2c; + +}; + + +#endif \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/PCA9532.cpp Thu May 17 23:11:08 2012 +0000 @@ -0,0 +1,191 @@ +/* mbed PCF9532 LED Driver Library + * + * Copyright (c) 2010, cstyles (http://mbed.org) + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + + +#include "PCA9532.h" +#include "mbed.h" + +/* + Constructor, pin names for I2C and the I2C addrss of the device + */ +PCA9532::PCA9532(PinName scl, PinName sda, int addr) + : _i2c(scl, sda) { + + _i2c.frequency(1000000); + + _addr = addr; + +} + + + + + +/* + Set the period + */ +int PCA9532::Period (int channel, float period) { + + char reg = 0; + + if (channel == 0) { + reg = PCA9532_REG_PSC0; + } else if (channel == 1) { + reg = PCA9532_REG_PSC1; + } else { + return (1); + } + + if (period > 1.0) { + period = 255; + } else if ( period < 0.0 ) { + period = 0; + } else { + period = 256 * period; + } + + _write(reg, period); + return(0); + +} + + +/* + Set the duty cycle + */ +int PCA9532::Duty (int channel, float d) { + + char duty = 0; + char reg = 0; + + if (channel == 0) { + reg = PCA9532_REG_PWM0; + } else if (channel == 1) { + reg = PCA9532_REG_PWM1; + } else { + return (1); + } + + if (d > 1.0) { + duty = 255; + } else if ( d < 0.0 ) { + duty = 0; + } else { + duty = 256 * d; + } + + _write(reg, duty); + return(0); + +} + +/* + Set each of the LEDs in this mask to the give mode + Loop through the mask calling SetLed on each match + alt_mode specifies the mode of the non-Matches of SetMode + */ +int PCA9532::SetMode (int mask, int mode) { + if ( (mode < 0) || (mode > 3) ) { + return(1); + } else { + for (int i=0 ; i < 16 ; i++ ) { + + // if this matches, set the LED to the mode + if (mask & (0x1 << i)) { + SetLed(i,mode); + } + } + } + return(0); +} + + + +/* + led is in the range 0-15 + mode is inthe range 0-3 + */ +int PCA9532::SetLed(int led, int mode) { + + int reg = 0; + int offset = (led % 4); + + printf("\nSetLed(%d,%d)\n", led, mode); + + // makesure mode is within bounds + if ( (mode < 0) || (mode > 3) ) { + printf("Error : Invalid mode supplied\n"); + return(1); + } + + // determine which register this is, + if (led < 4) { + reg = PCA9532_REG_LS0; + } else if ( (led > 3) && (led < 8) ) { + reg = PCA9532_REG_LS1; + } else if ( (led > 7) && (led < 12) ) { + reg = PCA9532_REG_LS2; + } else if ( (led > 11) && (led < 16) ) { + reg = PCA9532_REG_LS3; + } else { + return(1); + } + + // read the current status of the register + char regval = _read(reg); + + // clear the two bit slice at the calculated offset + regval &= ~(0x3 << (2 * offset)); + + // now OR in the mode, shifted by 2*offset + regval |= (mode << (2 * offset)); + + // write the new value back + _write(reg, regval); + + return(0); +} + + + +// private functions for low level IO + +void PCA9532::_write(int reg, int data) { + char args[2]; + args[0] = reg; + args[1] = data; + _i2c.write(_addr, args,2); +} + +int PCA9532::_read(int reg) { + char args[2]; + args[0] = reg; + _i2c.write(_addr, args, 1); + _i2c.read(_addr, args, 1); + return(args[0]); +} + + + + +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/PCA9532.h Thu May 17 23:11:08 2012 +0000 @@ -0,0 +1,68 @@ +/* mbed PCF9532 LED Driver Library + * + * Copyright (c) 2010, cstyles (http://mbed.org) + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef PCA9532_H +#define PCA9532_H + +#include "mbed.h" + +// register names +#define PCA9532_REG_INPUT0 0 +#define PCA9532_REG_INPUT1 1 +#define PCA9532_REG_PSC0 2 +#define PCA9532_REG_PWM0 3 +#define PCA9532_REG_PSC1 4 +#define PCA9532_REG_PWM1 5 +#define PCA9532_REG_LS0 6 +#define PCA9532_REG_LS1 7 +#define PCA9532_REG_LS2 8 +#define PCA9532_REG_LS3 9 + +// LED modes +#define MODE_OFF 0 +#define MODE_ON 1 +#define MODE_PWM0 2 +#define MODE_PWM1 3 + +class PCA9532 { + +public: + + PCA9532(PinName sda, PinName scl, int addr); + + int SetLed (int led, int mode); + int SetMode (int mask, int mode); + int Duty (int channel, float duty); + int Period (int channel, float period); + +protected: + + void _write(int reg, int data); + int _read(int reg); + int _addr; + I2C _i2c; + +}; + + +#endif
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Thu May 17 23:11:08 2012 +0000 @@ -0,0 +1,27 @@ +#include "mbed.h" +#include "MCP4661.h" + +DigitalOut myled(LED1); +DigitalOut res(LED2); +MCP4661 pot1(p28, p27, 0x5c); +Serial pc(USBTX,USBRX); + + +int main() { + int mid = 0x1; + int address = 0x5c; + pc.printf("Hello Mbed World\n"); + while(1) { + myled = 1; + wait(0.2); + myled = 0; + res = pot1.SetValue(0,mid); + pc.printf("Val = %d",mid); + //data[0] = 0x04; + //res = i2c.write(address, data, 1); + mid++; + wait(1.0); + res= 0; + wait(1.0); + } +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.lib Thu May 17 23:11:08 2012 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/projects/libraries/svn/mbed/trunk@43 \ No newline at end of file