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https://github.com/dexterbg/Twizy-Virtual-BMS.git
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Version 1.2.0:
- Ticker increments clockCnt on exit (first hook call with clockCnt=0) - Protocol startup phase closer to original: - id155[0] set to 0xFF on Init - Transition from Init to Ready after 100 ms - 3MW timing changed to 200 ms - id155[3] update coupled to 3MW switch - Added API functions to query charger infos: - int getChargerTemperature(); - float getDCConverterCurrent(); - bool isPluggedIn(); - bool isSwitchedOn();
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7 changed files with 85 additions and 16 deletions
15
API.md
15
API.md
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@ -97,6 +97,21 @@ Note: all control functions validate their parameters. If you pass any value out
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| `TWIZY_SERV_STOP` | Set SERV + STOP indicator + beep |
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## Info access
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- `int getChargerTemperature()` -- Get internal charger temperature
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- result: -40 .. 100 (°C, resolution 1 °C)
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- Hint: use this to protect the charger against over temperature by reducing the charge current
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- `float getDCConverterCurrent()` -- Get DC/DC converter current level
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- result: 0 .. 51 (A, resolution 1/5 A)
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- `bool isPluggedIn()` -- Get power grid connection status
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- result: true = 230V detected
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- `bool isSwitchedOn()` -- Get key switch status
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- result: true = key turned
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## User callback registration
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14
HISTORY.md
14
HISTORY.md
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@ -1,5 +1,19 @@
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# History
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## Version 1.2.0 (2017-07-29)
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- Ticker increments clockCnt on exit (first hook call with clockCnt=0)
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- Protocol startup phase closer to original:
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- id155[0] set to 0xFF on Init
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- Transition from Init to Ready after 100 ms
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- 3MW timing changed to 200 ms
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- id155[3] update coupled to 3MW switch
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- Added API functions to query charger infos:
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- int getChargerTemperature();
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- float getDCConverterCurrent();
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- bool isPluggedIn();
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- bool isSwitchedOn();
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## Version: 1.1.0 (2017-06-20)
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@ -76,8 +76,8 @@ unsigned long error = TWIZY_OK;
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//
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void bmsEnterState(TwizyState currentState, TwizyState newState) {
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// lower soc to prevent immediate charge stop:
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if (newState == Init) {
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// lower SOC at switch-on to prevent immediate charge stop:
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if (currentState == Init && newState == Ready) {
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if (soc > 99) {
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soc -= 1;
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twizy.setSOC(soc);
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@ -83,7 +83,7 @@ void bmsEnterState(TwizyState currentState, TwizyState newState) {
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// The charger will not start charging at SOC=100%, so lower a too
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// high SOC on wakeup to enable topping-off charges:
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if (newState == Init) {
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if (currentState == Init && newState == Ready) {
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if (soc > 99) {
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soc -= 1;
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twizy.setSOC(soc);
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Binary file not shown.
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@ -28,6 +28,11 @@ setCurrent KEYWORD2
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setCurrentQA KEYWORD2
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setError KEYWORD2
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getChargerTemperature KEYWORD2
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getDCConverterCurrent KEYWORD2
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isPluggedIn KEYWORD2
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isSwitchedOn KEYWORD2
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attachEnterState KEYWORD2
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attachCheckState KEYWORD2
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attachProcessCanMsg KEYWORD2
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@ -38,7 +38,7 @@
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#ifndef _TwizyVirtualBMS_h
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#define _TwizyVirtualBMS_h
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#define TWIZY_VBMS_VERSION "V1.1.0 (2017-06-20)"
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#define TWIZY_VBMS_VERSION "V1.2.0 (2017-07-29)"
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#ifndef TWIZY_TAG
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#define TWIZY_TAG "twizy."
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@ -206,6 +206,11 @@ public:
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bool setModuleTemperature(int module, int temp);
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bool setTemperature(int tempMin, int tempMax, bool deriveModules);
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bool setError(unsigned long error);
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int getChargerTemperature();
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float getDCConverterCurrent();
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bool isPluggedIn();
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bool isSwitchedOn();
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// State access:
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TwizyState state() {
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@ -365,7 +370,7 @@ bool TwizyVirtualBMS::setCurrent(float amps) {
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}
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// Set battery pack current level (native 1/4 A resolution)
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// milliamps: -2000 .. +2000 (positive = charge, negative = discharge)
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// quarterAmps: -2000 .. +2000 (positive = charge, negative = discharge)
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bool TwizyVirtualBMS::setCurrentQA(long quarterAmps) {
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CHECKLIMIT(quarterAmps, -2000L, 2000L);
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unsigned int level = 2000 + quarterAmps;
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@ -525,6 +530,26 @@ bool TwizyVirtualBMS::setError(unsigned long error) {
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}
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// Get charger temperature
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int TwizyVirtualBMS::getChargerTemperature() {
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return (int) id597[7] - 40;
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}
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// Get DC converter current
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float TwizyVirtualBMS::getDCConverterCurrent() {
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return (float) id597[2] / 5;
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}
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// Get plugin status
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bool TwizyVirtualBMS::isPluggedIn() {
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return ((id597[0] & 0x20) != 0);
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}
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// Get key switch status
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bool TwizyVirtualBMS::isSwitchedOn() {
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return ((id597[1] & 0x10) != 0);
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}
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// -----------------------------------------------------
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// Twizy CAN interface
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@ -667,9 +692,6 @@ bool TwizyVirtualBMS::sendMsg(INT32U id, INT8U len, INT8U *buf) {
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void TwizyVirtualBMS::ticker() {
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if (++clockCnt == 3000)
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clockCnt = 0;
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// Note: currently we turn off all CAN sends in state Error,
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// as that reliably lets the SEVCON and charger switch off.
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// It may be an option to only turn off ID 554 (or all 55x)
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@ -715,18 +737,19 @@ void TwizyVirtualBMS::ticker() {
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//
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// Create 3MW pulse cycle
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// (high 150ms → low 150ms → high)
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// (high 200ms → low 200ms → high)
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//
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if (counter3MW > 0) {
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--counter3MW;
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// 3MW low after 150 ms:
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if (counter3MW == 15) {
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// 3MW low after 200 ms:
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if (counter3MW == 20) {
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digitalWrite(TWIZY_3MW_CONTROL_PIN, 0);
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}
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// 3MW high after 300 ms (pulse finished):
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// 3MW high after 400 ms (pulse finished):
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else if (counter3MW == 0) {
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digitalWrite(TWIZY_3MW_CONTROL_PIN, 1);
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id155[3] = 0x54;
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}
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}
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@ -739,6 +762,10 @@ void TwizyVirtualBMS::ticker() {
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// Transition to Ready?
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case Init:
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// …from Init after first 100 ms:
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if (clockCnt < 9) {
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break;
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}
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case StopDrive:
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case StopCharge:
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case StopTrickle:
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@ -791,6 +818,14 @@ void TwizyVirtualBMS::ticker() {
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if (bmsTicker) {
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(*bmsTicker)(clockCnt);
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}
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//
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// Cyclic clock counter
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//
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if (++clockCnt == 3000)
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clockCnt = 0;
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}
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@ -877,6 +912,7 @@ void TwizyVirtualBMS::enterState(TwizyState newState) {
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case Off:
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case Init:
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id155[0] = 0xFF;
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id155[3] = 0x94;
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id424[0] = 0x00;
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id425[0] = 0x1D;
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@ -895,11 +931,10 @@ void TwizyVirtualBMS::enterState(TwizyState newState) {
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break;
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case Ready:
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// restore minimum charge current level:
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if (id155[0] == 0) {
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// restore minimum charge current level after stop/init:
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if (id155[0] == 0 || id155[0] == 0xFF) {
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id155[0] = 1;
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}
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id155[3] = 0x54;
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// keep stop charge request if set:
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if (id424[0] != 0x12) {
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id424[0] = 0x11;
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@ -909,7 +944,7 @@ void TwizyVirtualBMS::enterState(TwizyState newState) {
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if (digitalRead(TWIZY_3MW_CONTROL_PIN) == 0) {
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// ...start 3MW pulse cycle:
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digitalWrite(TWIZY_3MW_CONTROL_PIN, 1);
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counter3MW = 30;
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counter3MW = 40;
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}
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break;
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