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Version: 1.1.0

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- Added support for Timer2 & Timer3 (see config header)
- Added `setCurrentQA()` API call (native=fast 1/4 A resolution)
This commit is contained in:
Michael Balzer 2017-06-28 00:31:39 +02:00
parent 767b015067
commit 84c84590ab
9 changed files with 101 additions and 14 deletions
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4
API.md
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@ -48,6 +48,10 @@ Note: all control functions validate their parameters. If you pass any value out
- `bool setCurrent(float amps)` -- Set momentary battery pack current level
- amps: -500 .. +500 (A, positive = charge, negative = discharge)
- `bool setCurrentQA(long quarterAmps)` -- Set momentary battery pack current level
- quarterAmps: -2000 .. +2000 (1/4 A, positive = charge, negative = discharge)
- This is the native BMS current resolution, so no float/division necessary
- `bool setSOC(float soc)` -- Set state of charge
- soc: 0.00 .. 100.00 (%)
- Note: the charger will not start charging at SOC=100%

6
HISTORY.md
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@ -1,6 +1,12 @@
# History
## Version: 1.1.0 (2017-06-20)
- Added support for Timer2 & Timer3 (see config header)
- Added `setCurrentQA()` API call (native=fast 1/4 A resolution)
## Version: 1.0.0 (2017-06-17)
- Conversion to Arduino library

3
README.md
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@ -19,7 +19,10 @@ To download, click the DOWNLOADS button in the top right corner, download the ZI
You will also need these libraries:
- [MCP_CAN_lib by Cory Fowler](https://github.com/coryjfowler/MCP_CAN_lib)
- …and one of…
- [TimerOne by Paul Stoffregen](https://github.com/PaulStoffregen/TimerOne)
- [FlexiTimer2 by Paul Stoffregen](https://github.com/PaulStoffregen/FlexiTimer2)
- [TimerThree by Paul Stoffregen](https://github.com/PaulStoffregen/TimerThree)
To get the smallest possible ROM & RAM footprint, set `TWIZY_DEBUG_LEVEL` to 0 and `DEBUG_MODE` of the MCP_CAN library to 0. This reduces the core memory usage of the VirtualBMS library to (currently) 8338 bytes ROM and 403 bytes RAM.

11
examples/SimpleBMS/TwizyVirtualBMS_config.h
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@ -20,13 +20,22 @@
// You may need to lower this if your Arduino is too slow.
#define TWIZY_CAN_CLOCK_US 10000
// VirtualBMS can use Timer1 (16 bit), Timer2 (8 bit) or Timer3 (16bit)
// Select Timer2/3 if you need Timer1 for e.g. AltSoftSerial
#define TWIZY_USE_TIMER 1
// Timer2: precise resolutions depend on CPU type & clock frequency
// i.e. Arduino Nano 16 MHz: 1000 = 1 ms / 2000 = 0.5 ms / 5000 = 0.2 ms / 10000 = 0.1 ms
// Use lowest resolution possible to minimize side effects on AltSoftSerial
#define TWIZY_TIMER2_RESOLUTION 1000
// Set your MCP clock frequency here:
#define TWIZY_CAN_MCP_FREQ MCP_16MHZ
// Set your SPI CS pin number here:
#define TWIZY_CAN_CS_PIN 10
// If you've connected the CAN module's IRQ pin:
// Uncomment if you've connected the CAN module's IRQ pin:
//#define TWIZY_CAN_IRQ_PIN 2
// Set your 3MW (ECU_OK) control pin here:

11
examples/Template/TwizyVirtualBMS_config.h
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@ -20,13 +20,22 @@
// You may need to lower this if your Arduino is too slow.
#define TWIZY_CAN_CLOCK_US 10000
// VirtualBMS can use Timer1 (16 bit), Timer2 (8 bit) or Timer3 (16bit)
// Select Timer2/3 if you need Timer1 for e.g. AltSoftSerial
#define TWIZY_USE_TIMER 1
// Timer2: precise resolutions depend on CPU type & clock frequency
// i.e. Arduino Nano 16 MHz: 1000 = 1 ms / 2000 = 0.5 ms / 5000 = 0.2 ms / 10000 = 0.1 ms
// Use lowest resolution possible to minimize side effects on AltSoftSerial
#define TWIZY_TIMER2_RESOLUTION 1000
// Set your MCP clock frequency here:
#define TWIZY_CAN_MCP_FREQ MCP_16MHZ
// Set your SPI CS pin number here:
#define TWIZY_CAN_CS_PIN 10
// If you've connected the CAN module's IRQ pin:
// Uncomment if you've connected the CAN module's IRQ pin:
//#define TWIZY_CAN_IRQ_PIN 2
// Set your 3MW (ECU_OK) control pin here:

1
keywords.txt
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@ -25,6 +25,7 @@ setSOC KEYWORD2
setTemperature KEYWORD2
setVoltage KEYWORD2
setCurrent KEYWORD2
setCurrentQA KEYWORD2
setError KEYWORD2
attachEnterState KEYWORD2

2
library.properties
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@ -1,5 +1,5 @@
name=Twizy Virtual BMS
version=1.0.0
version=1.1.0
author=Michael Balzer
maintainer=Michael Balzer <dexter@dexters-web.de>
sentence=Emulation of Renault Twizy BMS (battery management system)

60
src/TwizyVirtualBMS.h
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@ -21,7 +21,10 @@
*
* Libraries used:
* - MCP_CAN: https://github.com/coryjfowler/MCP_CAN_lib
* …plus one of…
* - TimerOne: https://github.com/PaulStoffregen/TimerOne
* - FlexiTimer2: https://github.com/PaulStoffregen/FlexiTimer2
* - TimerThree: https://github.com/PaulStoffregen/TimerThree
*
* Licenses:
* This is free software and information under the following licenses:
@ -35,24 +38,37 @@
#ifndef _TwizyVirtualBMS_h
#define _TwizyVirtualBMS_h
#define TWIZY_VBMS_VERSION "V1.1.0 (2017-06-20)"
#ifndef TWIZY_TAG
#define TWIZY_TAG "twizy."
#endif
#include <Arduino.h>
#include <avr/pgmspace.h>
#include <mcp_can.h>
#include <mcp_can_dfs.h>
#ifndef TWIZY_USE_TIMER
#define TWIZY_USE_TIMER 1
#endif
#if TWIZY_USE_TIMER == 1
#include <TimerOne.h>
#elif TWIZY_USE_TIMER == 2
#include <FlexiTimer2.h>
#elif TWIZY_USE_TIMER == 3
#include <TimerThree.h>
#else
#error "TWIZY_USE_TIMER invalid, please set to 1, 2 or 3!"
#endif
#ifndef _TwizyVirtualBMS_config_h
#warning "Fallback to default TwizyVirtualBMS_config.h -- you should copy this into your sketch folder"
#include "TwizyVirtualBMS_config.h"
#endif
#define TWIZY_VBMS_VERSION "V1.0.0 (2017-06-17)"
#ifndef TWIZY_TAG
#define TWIZY_TAG "twizy."
#endif
// ==========================================================================
// TYPES AND CONSTANTS
@ -78,7 +94,7 @@ enum TwizyState {
// Twizy state names:
#if TWIZY_DEBUG_LEVEL >= 1
const char PROGMEM twizyStateName[13][13] = {
const char twizyStateName[13][13] PROGMEM = {
"Off",
"Init",
"Error",
@ -181,6 +197,7 @@ public:
// Model access:
bool setChargeCurrent(int amps);
bool setCurrent(float amps);
bool setCurrentQA(long quarterAmps);
bool setSOC(float soc);
bool setPowerLimits(unsigned int drive, unsigned int recup);
bool setSOH(int soh);
@ -347,6 +364,16 @@ bool TwizyVirtualBMS::setCurrent(float amps) {
return true;
}
// Set battery pack current level (native 1/4 A resolution)
// milliamps: -2000 .. +2000 (positive = charge, negative = discharge)
bool TwizyVirtualBMS::setCurrentQA(long quarterAmps) {
CHECKLIMIT(quarterAmps, -2000L, 2000L);
unsigned int level = 2000 + quarterAmps;
id155[1] = (id155[1] & 0xf0) | ((level & 0x0f00) >> 8);
id155[2] = level & 0x00ff;
return true;
}
// Set battery pack SOC
// soc: 0.00 .. 100.00
// Note: the charger will not start charging at SOC=100%
@ -962,9 +989,28 @@ void TwizyVirtualBMS::begin() {
enterState(Off);
#if TWIZY_USE_TIMER == 1
// Use Timer1 (16 bit):
Timer1.initialize(TWIZY_CAN_CLOCK_US);
Timer1.attachInterrupt(twizyClockISR);
#elif TWIZY_USE_TIMER == 2
// Use Timer2 (8 bit): derive count from resolution:
FlexiTimer2::set(TWIZY_CAN_CLOCK_US / (1000000UL / TWIZY_TIMER2_RESOLUTION),
1.0 / TWIZY_TIMER2_RESOLUTION,
twizyClockISR);
FlexiTimer2::start();
#else
// Use Timer3 (16 bit):
Timer3.initialize(TWIZY_CAN_CLOCK_US);
Timer3.attachInterrupt(twizyClockISR);
#endif
Serial.println(F(TWIZY_TAG "begin: done"));
}

11
src/TwizyVirtualBMS_config.h
View file

@ -20,13 +20,22 @@
// You may need to lower this if your Arduino is too slow.
#define TWIZY_CAN_CLOCK_US 10000
// VirtualBMS can use Timer1 (16 bit), Timer2 (8 bit) or Timer3 (16bit)
// Select Timer2/3 if you need Timer1 for e.g. AltSoftSerial
#define TWIZY_USE_TIMER 1
// Timer2: precise resolutions depend on CPU type & clock frequency
// i.e. Arduino Nano 16 MHz: 1000 = 1 ms / 2000 = 0.5 ms / 5000 = 0.2 ms / 10000 = 0.1 ms
// Use lowest resolution possible to minimize side effects on AltSoftSerial
#define TWIZY_TIMER2_RESOLUTION 1000
// Set your MCP clock frequency here:
#define TWIZY_CAN_MCP_FREQ MCP_16MHZ
// Set your SPI CS pin number here:
#define TWIZY_CAN_CS_PIN 10
// If you've connected the CAN module's IRQ pin:
// Uncomment if you've connected the CAN module's IRQ pin:
//#define TWIZY_CAN_IRQ_PIN 2
// Set your 3MW (ECU_OK) control pin here: