Sam Walsh
Exercises the DAC on the STM32F303K8 NUCLEO32 BOARD
Fork of
Nucleo_FrequencyCounter_Timed
by 
Sam Walsh
Diff: ds2781.cpp
- Revision:
- 2:29a5b859318a
- Parent:
- 1:85b1605ed4e0
diff -r 85b1605ed4e0 -r 29a5b859318a ds2781.cpp
--- a/ds2781.cpp Wed Feb 24 12:33:26 2016 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,346 +0,0 @@
-#include "ds2781.h"
-#include "OneWire_Methods.h"
-
-/* --------------------------------------------------------------------------
- This file includes the functions needed to access and modify the registers
- in a DS2781 using the 1-Wire protocol. The DS2781 is an IC that measures
- voltage, current, accumulated current and temperature. It implements
- capacity estimation algorithms for rechargeable batteries. However, this
- file only includes routines to access the electrical parameters and not
- the age-estimation registers.
- --------------------------------------------------------------------------
-----------------------
- NOTE_1: The functions that return parameters, do so in the units reported
- in the description of each function. The user should implement the scaling
- on his/her own.
- -------------------------------------------------------------------------- */
-
-/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
- * Function name : ReadVoltage *
- * Overview : Returns the voltage measured at the VIN input of the DS2781 *
- * in units of 9.76mV *
- * Return type : 16-bit unsigned int *
- * Parameters : None *
- * Time : < 4.3ms *
- *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
-
-int ReadVoltage (void)
-{
- uint16_t result = 0;
- if( OneWire_Reset() == true)
- {
- OneWire_WriteByte( SKIP_NETADDRESS );
- OneWire_WriteByte( READ_DATA );
- OneWire_WriteByte( 0x0C ); //Register Address
- result = OneWire_ReadByte() << 8; //MSB
- result |= OneWire_ReadByte() ; //LSB
- }
- return (result >> 5);
-}
-
-/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
- * Function name : ReadCurrent *
- * Overview : Returns the current measured through Rsns external to DS2781 in *
- * units of 1.5625uV/Rsns. Positive current indicates discharge *
- * Return type : 16-bit unsigned int *
- * Parameters : None *
- * Time : < 4.3ms *
- *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
-
-uint16_t ReadCurrent (void)
-{
- uint16_t result = 0;
- if( OneWire_Reset() == true)
- {
- OneWire_WriteByte( SKIP_NETADDRESS );
- OneWire_WriteByte( READ_DATA );
- OneWire_WriteByte( 0x0E ); //Register Address
- result = ((uint16_t)OneWire_ReadByte() ) << 8; //MSB
- result |= ((uint16_t)OneWire_ReadByte() ); //LSB
- }
- return result;
-}
-
-/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
- * Function name : ReadAccumulatedCurrent *
- * Overview : Returns the accumulated current at the DS2781 in units of *
- * 1.526nVhr/Rsns *
- * Return type : 32-bit unsigned long *
- * Parameters : None *
- * Time : < 5.8ms *
- *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
-
-uint32_t ReadAccumulatedCurrent (void)
-{
- unsigned long result = 0;
- if( OneWire_Reset() == true)
- {
- OneWire_WriteByte( SKIP_NETADDRESS );
- OneWire_WriteByte( READ_DATA );
- OneWire_WriteByte( 0x10 ); //Register Address
- result = ((unsigned long)OneWire_ReadByte() ) << 24; //MSB
- result |= ((unsigned long)OneWire_ReadByte() ) << 16;
- result |= ((unsigned long)OneWire_ReadByte() ) << 8;
- result |= ((unsigned long)OneWire_ReadByte() ); //LSB
- }
- return (result >> 4);
-}
-
-/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
- * Function name : ResetAccumulatedCurrent *
- * Overview : Resets the accumulated current register at the DS2781 *
- * Return type : Void *
- * Parameters : None *
- * Time : < 4.2ms *
- *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
-
-void ResetAccumulatedCurrent (void)
-{
- if( OneWire_Reset() == true)
- {
- OneWire_WriteByte( SKIP_NETADDRESS );
- OneWire_WriteByte( WRITE_DATA );
- OneWire_WriteByte( 0x10 ); //Register Address
- OneWire_WriteByte( 0x00 ); //MSB
- OneWire_WriteByte( 0x00 ); //LSB
- }
-}
-
-/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
- * Function name : ReadNetAddress *
- * Overview : Returns the net address of the DS2781 *
- * Return type : 64-bit unsigned long long *
- * Parameters : None *
- * Time : < 7.3ms *
- *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
-
-uint32_t ReadNetAddress (void)
-{
- uint16_t result = 0;
- if( OneWire_Reset() == true)
- {
- OneWire_WriteByte( READ_NETADDRESS );
- //result = ((Quint16_t)OneWire_ReadByte() ); //MSB
- //result |= ((Quint16_t)OneWire_ReadByte() ) << 8;
- //result |= ((Quint16_t)OneWire_ReadByte() ) << 16;
- //result |= ((Quint16_t)OneWire_ReadByte() ) << 24;
- //result |= ((Quint16_t)OneWire_ReadByte() ) << 32;
- //result |= ((Quint16_t)OneWire_ReadByte() ) << 40;
- //result |= ((Quint16_t)OneWire_ReadByte() ) << 48;
- //result |= ((Quint16_t)OneWire_ReadByte() ) <<56; //LSB
- }
- return result;
-}
-
-/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
- * Function name : ReadTemperature *
- * Overview : Returns the temperature measured by the DS2781 in units of *
- * 0.125°C *
- * Return type : 16-bit unsigned int *
- * Parameters : None *
- * Time : < 4.3ms *
- *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
-
-uint16_t ReadTemperature (void)
-{
- uint16_t result = 0;
- if( OneWire_Reset() == true)
- {
- OneWire_WriteByte( SKIP_NETADDRESS );
- OneWire_WriteByte( READ_DATA );
- OneWire_WriteByte( 0x0A ); //Register Address
- result = ((uint16_t)OneWire_ReadByte() ) << 8; //MSB
- result |= ((uint16_t)OneWire_ReadByte() ); //LSB
- }
- return (result >> 5);
-}
-
-/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
- * Function name : ReadCurrentOffset *
- * Overview : Returns the value of the current offset register of the DS2781 *
- * in units of 1.56uV/Rsns *
- * Return type : 8-bit uint8_t *
- * Parameters : None *
- * Time : < 3.6ms *
- *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
-
-uint8_t ReadCurrentOffset (void)
-{
- uint8_t result = 0;
- if( OneWire_Reset() == true)
- {
- OneWire_WriteByte( SKIP_NETADDRESS );
- OneWire_WriteByte( READ_DATA );
- OneWire_WriteByte( 0x7B ); //Register Address
- result = OneWire_ReadByte();
- }
- return result;
-}
-
-/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
- * Function name : WriteCurrentOffset *
- * Overview : Writes to the current offset register of the DS2781 in units of *
- * 1.56uV/Rsns *
- * Return type : Void *
- * Parameters : Byte to be written to the register in 2's complement *
- * Time : < 3.6ms *
- *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
-
-void WriteCurrentOffset (uint8_t offset)
-{
- if( OneWire_Reset() == true)
- {
- OneWire_WriteByte( SKIP_NETADDRESS );
- OneWire_WriteByte( WRITE_DATA );
- OneWire_WriteByte( 0x7B ); //Register Address
- OneWire_WriteByte( offset );
- }
-}
-
-/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
- * Function name : AdjustCurrentOffset *
- * Overview : Adjusts the value of the current offset register of the DS2781 *
- * by taking into account the offset at no current. Should only *
- * be called when the battery is supplying no current *
- * Return type : Void *
- * Parameters : None *
- * Time : < 3.62s *
- *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
-
-void AdjustCurrentOffset (void)
-{
- char offset = 0;
-
- WriteCurrentOffset ( 0x0 ); //Reset Current Offset Register
-
- //Delay100MSx(36); //Wait 3.6s for current register to update
-
- if( OneWire_Reset() == true)
- {
- OneWire_WriteByte( SKIP_NETADDRESS );
- OneWire_WriteByte( READ_DATA );
- OneWire_WriteByte( 0x0F ); //Current Register LSB
- offset = OneWire_ReadByte();
- }
-
- offset = 256 - offset; //2's complement Negating
-
- if( OneWire_Reset() == true)
- {
- OneWire_WriteByte( SKIP_NETADDRESS );
- OneWire_WriteByte( WRITE_DATA );
- OneWire_WriteByte( 0x7B ); //Current Offset Register
- OneWire_WriteByte( offset );
- }
-}
-
-/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
- * Function name : UpdateControlRegister *
- * Overview : Writes to the Control register of the DS2781 using the values *
- * supplied as a byte parameter. Writes to EEPROM addresses are *
- * ignored for up to 15ms after this function is called. *
- * Return type : Void *
- * Parameters : None *
- * Time : < 6.4ms *
- *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
-
-void UpdateControlRegister (uint8_t control)
-{
- if( OneWire_Reset() == true )
- {
- OneWire_WriteByte( SKIP_NETADDRESS );
- OneWire_WriteByte( WRITE_DATA );
- OneWire_WriteByte( 0x60 ); //Register Address
- OneWire_WriteByte( control );
- }
-
- if( OneWire_Reset() == true )
- {
- OneWire_WriteByte( SKIP_NETADDRESS );
- OneWire_WriteByte( COPY_DATA );
- OneWire_WriteByte( 0x60 ); //Register Address
- }
-}
-
-/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
- * Function name : ReadRAM *
- * Overview : Reads a byte from the shadow RAM of the DS2781 at the given *
- * memory address *
- * Return type : 8-bit uint8_t *
- * Parameters : Address of register to be read *
- * Time : < 3.6ms *
- *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
-
-uint8_t ReadRAM (uint8_t addr)
-{
- uint8_t result = 0;
- if( OneWire_Reset() == true)
- {
- OneWire_WriteByte( SKIP_NETADDRESS );
- OneWire_WriteByte( READ_DATA );
- OneWire_WriteByte( addr ); //Register Address
- result = OneWire_ReadByte();
- }
- return result;
-}
-
-/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
- * Function name : WriteRAM *
- * Overview : Writes the given byte to the shadow RAM of the DS2781 at the *
- * given memory address *
- * Return type : Void *
- * Parameters : Byte to be written, address of register *
- * Time : < 3.6ms *
- *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
-
-void WriteRAM (uint8_t byte, uint8_t addr)
-{
- if( OneWire_Reset() == true)
- {
- OneWire_WriteByte( SKIP_NETADDRESS );
- OneWire_WriteByte( WRITE_DATA );
- OneWire_WriteByte( addr ); //Register Address
- OneWire_WriteByte( byte );
- }
-}
-
-/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
- * Function name : CopyEEPROM *
- * Overview : This function copies the contents of the EEPROM shadow RAM to *
- * EEPROM cells for the EEPROM block containing thr given address. *
- * Writes to EEPROM addresses are ignored for up to 15ms after this *
- * function is called. *
- * Return type : Void *
- * Parameters : Memory address of shadow RAM to be copied *
- * Time : < 2.9ms *
- *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
-
-void CopyEEPROM (uint8_t addr)
-{
- if( OneWire_Reset() == true)
- {
- OneWire_WriteByte( SKIP_NETADDRESS );
- OneWire_WriteByte( COPY_DATA );
- OneWire_WriteByte( addr );
- }
-}
-
-/*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
- * Function name : RecallEEPROM *
- * Overview : This function copies the contents of the EEPROM cells to the *
- * shadow RAM for the EEPROM block containing the given address. * *
- * Return type : Void *
- * Parameters : Memory address of EEPROM to be copied *
- * Time : < 2.9ms *
- *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
-
-void RecallEEPROM (uint8_t addr)
-{
- if( OneWire_Reset() == true)
- {
- OneWire_WriteByte( SKIP_NETADDRESS );
- OneWire_WriteByte( RECALL_DATA );
- OneWire_WriteByte( addr );
- }
-}
-/* EOF */
\ No newline at end of file