![](/media/cache/profiles/3ceca2fc13c2fa01d4aed1e552d3a6fb.50x50_q85.jpg)
there is a problem. i cant send data continuously.
Dependencies: EthernetNetIf mbed HMC6352 ITG3200 ADXL345 IMUfilter
Diff: SCP1000/SCP1000.cpp
- Revision:
- 0:711905e937b9
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SCP1000/SCP1000.cpp Sun Jul 24 19:49:51 2011 +0000 @@ -0,0 +1,85 @@ +/** + * @section LICENSE + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * @section DESCRIPTION + * Library to interface with the SCP1000 pressure and temperature sensor. + */ + +#include "SCP1000.h" + +SCP1000::SCP1000(PinName mosi, PinName miso, PinName sclk, PinName cs) + : m_spi(mosi, miso, sclk) + , m_cs(cs) { + m_cs=1; + m_spi.frequency(500000); // the fastest of the sensor + m_spi.format(8, 0); // duda son dos palabras de 8 bits? + wait(0.5); + //------------------------------------------------ + // pc.printf("RESET\r\n"); + write_register(0x06,0x01); + wait(0.5); + + // pc.printf("Initialize High Resolution Constant Reading Mode\r\n"); + write_register(0x03,0x0A); + wait(0.5); +} + +unsigned long SCP1000::readPressure() { + unsigned long pressure_msb = read_register(PRESSURE); + pressure_msb &= 0x07; + unsigned long pressure_lsb = read_register16(PRESSURE_LSB); + unsigned long pressure = ((pressure_msb<<16)| pressure_lsb); + pressure /= 4; + + return pressure; +} + +float SCP1000::readTemperature() { + float temp_in = read_register16(TEMP); + temp_in /= 20; + return temp_in; +} + + char SCP1000::read_register(char register_name) { + register_name <<=2; + register_name &= 0xFC; + m_cs=0; //Select SPI device + m_spi.write(register_name); //Send register location + char register_value=m_spi.write(0x00); + m_cs=1; + return register_value; +} + +void SCP1000::write_register(char register_name, char register_value) { + register_name <<= 2; + register_name |= 0x02; //le estamos diciendo que escriba + m_cs=0; //Select SPI device + m_spi.write(register_name); //Send register location + m_spi.write(register_value); //Send value to record into register + m_cs=1; +} + +float SCP1000::read_register16(char register_name) { + register_name <<= 2; + register_name &= 0xFC; //Read command + m_cs=0; //Select SPI Device + m_spi.write(register_name); //Write byte to device + int in_byte1 = m_spi.write(0x00); + int in_byte2 = m_spi.write(0x00); + m_cs=1; + float in_word= (in_byte1<<=8) | (in_byte2); + return(in_word); +} \ No newline at end of file