mirror of
https://github.com/betaflight/betaflight.git
synced 2025-07-17 13:25:30 +03:00
Thomas Miric
parent
be89a6428a
commit
b16c9e9adf
1 changed files with 42 additions and 49 deletions
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@ -40,6 +40,7 @@
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#include "flight/imu.h"
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#include "io/serial.h"
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#include "rx/rx.h"
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#include "rx/jetiexbus.h"
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@ -54,11 +55,12 @@
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#define EXTEL_SYNC_LEN 1
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#define EXTEL_CRC_LEN 1
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#define EXTEL_HEADER_LEN 6
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#define EXTEL_MAX_LEN 28
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#define EXTEL_MAX_LEN 29
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#define EXTEL_OVERHEAD (EXTEL_SYNC_LEN + EXTEL_HEADER_LEN + EXTEL_CRC_LEN)
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#define EXTEL_MAX_PAYLOAD (EXTEL_MAX_LEN - EXTEL_OVERHEAD)
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#define EXBUS_MAX_REQUEST_BUFFER_SIZE (EXBUS_OVERHEAD + EXTEL_MAX_LEN)
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enum exTelHeader_e {
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EXTEL_HEADER_SYNC = 0,
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EXTEL_HEADER_TYPE_LEN,
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@ -80,6 +82,7 @@ enum {
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};
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enum exDataType_e {
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EX_TYPE_NONE = 0,
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EX_TYPE_6b = 0, // int6_t Data type 6b (-31 ¸31)
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EX_TYPE_14b = 1, // int14_t Data type 14b (-8191 ¸8191)
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EX_TYPE_22b = 4, // int22_t Data type 22b (-2097151 ¸2097151)
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@ -118,8 +121,7 @@ const exBusSensor_t jetiExSensors[] = {
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{"Power", "W", EX_TYPE_22b, DECIMAL_MASK(1)},
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{"Roll angle", "\xB0", EX_TYPE_14b, DECIMAL_MASK(1)},
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{"Pitch angle", "\xB0", EX_TYPE_14b, DECIMAL_MASK(1)},
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{"Heading", "\xB0", EX_TYPE_14b, DECIMAL_MASK(1)},
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{"Vario", "m/s", EX_TYPE_22b, DECIMAL_MASK(2)}
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{"Heading", "\xB0", EX_TYPE_14b, DECIMAL_MASK(1)}
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};
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// after every 15 sensors increment the step by 2 (e.g. ...EX_VAL15, EX_VAL16 = 17) to skip the device description
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@ -131,24 +133,24 @@ enum exSensors_e {
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EX_POWER,
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EX_ROLL_ANGLE,
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EX_PITCH_ANGLE,
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EX_HEADING,
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EX_VARIO
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EX_HEADING
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};
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#define JETI_EX_SENSOR_COUNT (ARRAYLEN(jetiExSensors))
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static uint8_t jetiExBusTelemetryFrame[40];
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static uint8_t jetiExBusTransceiveState = EXBUS_TRANS_RX;
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static uint8_t firstActiveSensor = 0;
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static uint32_t exSensorEnabled = 0;
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static uint8_t activeSensorList[JETI_EX_SENSOR_COUNT];
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static uint8_t activeSensors;
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static uint32_t exSensorEnabled;
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static uint8_t sendJetiExBusTelemetry(uint8_t packetID, uint8_t item);
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static uint8_t getNextActiveSensor(uint8_t currentSensor);
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// Jeti Ex Telemetry CRC calculations for a frame
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uint8_t calcCRC8(uint8_t *pt, uint8_t msgLen)
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{
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uint8_t crc=0;
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for (uint8_t mlen = 0; mlen < msgLen; mlen++) {
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crc ^= pt[mlen];
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crc = crc ^ (crc << 1) ^ (crc << 2) ^ (0x0e090700 >> ((crc >> 3) & 0x18));
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@ -170,7 +172,6 @@ void initJetiExBusTelemetry(void)
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// Init Ex Telemetry header
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uint8_t *jetiExTelemetryFrame = &jetiExBusTelemetryFrame[EXBUS_HEADER_DATA];
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jetiExTelemetryFrame[EXTEL_HEADER_SYNC] = 0x9F; // Startbyte
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jetiExTelemetryFrame[EXTEL_HEADER_USN_LB] = 0x1E; // Serial Number 4 Byte
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jetiExTelemetryFrame[EXTEL_HEADER_USN_HB] = 0xA4;
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@ -178,7 +179,8 @@ void initJetiExBusTelemetry(void)
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jetiExTelemetryFrame[EXTEL_HEADER_LSN_HB] = 0x00;
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jetiExTelemetryFrame[EXTEL_HEADER_RES] = 0x00; // reserved, by default 0x00
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//exSensorEnabled = 0x3fe;
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bitArraySet(&exSensorEnabled, 0);
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// Check which sensors are available
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if (batteryConfig()->voltageMeterSource != VOLTAGE_METER_NONE) {
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bitArraySet(&exSensorEnabled, EX_VOLTAGE);
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@ -192,7 +194,6 @@ void initJetiExBusTelemetry(void)
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}
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if (sensors(SENSOR_BARO)) {
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bitArraySet(&exSensorEnabled, EX_ALTITUDE);
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bitArraySet(&exSensorEnabled, EX_VARIO);
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}
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if (sensors(SENSOR_ACC)) {
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bitArraySet(&exSensorEnabled, EX_ROLL_ANGLE);
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@ -201,7 +202,13 @@ void initJetiExBusTelemetry(void)
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if (sensors(SENSOR_MAG)) {
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bitArraySet(&exSensorEnabled, EX_HEADING);
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}
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firstActiveSensor = getNextActiveSensor(0); // find the first active sensor
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for (uint8_t item = 0; item < JETI_EX_SENSOR_COUNT; item++ ) {
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if (bitArrayGet(&exSensorEnabled, item)) {
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activeSensorList[activeSensors] = item;
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activeSensors++;
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}
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}
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}
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void createExTelemetryTextMessage(uint8_t *exMessage, uint8_t messageID, const exBusSensor_t *sensor)
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@ -255,62 +262,48 @@ int32_t getSensorValue(uint8_t sensor)
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return attitude.values.yaw;
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break;
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case EX_VARIO:
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return getEstimatedVario();
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break;
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default:
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return -1;
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}
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}
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uint8_t getNextActiveSensor(uint8_t currentSensor)
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{
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while( ++currentSensor < JETI_EX_SENSOR_COUNT) {
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if (bitArrayGet(&exSensorEnabled, currentSensor)) {
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break;
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}
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}
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if (currentSensor == JETI_EX_SENSOR_COUNT ) {
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currentSensor = firstActiveSensor;
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}
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return currentSensor;
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}
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uint8_t createExTelemetryValueMessage(uint8_t *exMessage, uint8_t item)
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{
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uint8_t startItem = item;
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uint8_t sensorItemMaxGroup = (item & 0xF0) + 0x10;
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uint8_t sensorItem = activeSensorList[item];
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uint8_t sensorItemMaxGroup = sensorItem | 0xF0;
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uint8_t iCount;
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uint8_t messageSize;
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uint32_t sensorValue;
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exMessage[EXTEL_HEADER_LSN_LB] = item & 0xF0; // Device ID
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uint8_t *p = &exMessage[EXTEL_HEADER_ID];
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while (item < sensorItemMaxGroup) {
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*p++ = ((item & 0x0F) << 4) | jetiExSensors[item].exDataType; // Sensor ID (%16) | EX Data Type
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sensorValue = getSensorValue(item);
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iCount = exDataTypeLen[jetiExSensors[item].exDataType];
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while (sensorItem <= sensorItemMaxGroup) {
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*p++ = ((sensorItem & 0x0F) << 4) | jetiExSensors[sensorItem].exDataType; // Sensor ID (%16) | EX Data Type
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sensorValue = getSensorValue(sensorItem);
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iCount = exDataTypeLen[jetiExSensors[sensorItem].exDataType];
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while (iCount > 1) {
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*p++ = sensorValue;
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sensorValue = sensorValue >> 8;
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iCount--;
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}
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*p++ = (sensorValue & 0x9F) | jetiExSensors[item].decimals;
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*p++ = (sensorValue & 0x9F) | jetiExSensors[sensorItem].decimals;
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item = getNextActiveSensor(item);
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item++;
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if (startItem >= item) {
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if (item > activeSensors) {
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item = 0;
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break;
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}
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if ((p - &exMessage[EXTEL_HEADER_ID]) + exDataTypeLen[jetiExSensors[item].exDataType] + 1 >= EXTEL_MAX_PAYLOAD) {
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sensorItem = activeSensorList[item];
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if ((p - &exMessage[EXTEL_HEADER_ID]) + exDataTypeLen[jetiExSensors[sensorItem].exDataType] + 1 >= EXTEL_MAX_PAYLOAD) {
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break;
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}
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}
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messageSize = (EXTEL_HEADER_LEN + (p-&exMessage[EXTEL_HEADER_ID]));
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exMessage[EXTEL_HEADER_TYPE_LEN] = EXTEL_DATA_MSG | messageSize;
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exMessage[messageSize + EXTEL_CRC_LEN] = calcCRC8(&exMessage[EXTEL_HEADER_TYPE_LEN], messageSize);
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@ -341,8 +334,8 @@ void handleJetiExBusTelemetry(void)
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static uint16_t framesLost = 0; // only for debug
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static uint8_t item = 0;
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uint32_t timeDiff;
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// Check if we shall reset frame position due to time
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if (jetiExBusRequestState == EXBUS_STATE_RECEIVED) {
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// to prevent timing issues from request to answer - max. 4ms
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@ -382,12 +375,12 @@ void handleJetiExBusTelemetry(void)
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uint8_t sendJetiExBusTelemetry(uint8_t packetID, uint8_t item)
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{
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static uint8_t sensorDescriptionCounter = 0xFF;
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static uint8_t requestLoop = 0xFF;
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static uint8_t requestLoop = 0;
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uint8_t *jetiExTelemetryFrame = &jetiExBusTelemetryFrame[EXBUS_HEADER_DATA];
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if (requestLoop) {
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if (requestLoop < 0xFF) {
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while( ++sensorDescriptionCounter < JETI_EX_SENSOR_COUNT) {
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if (bitArrayGet(&exSensorEnabled, sensorDescriptionCounter) || (jetiExSensors[sensorDescriptionCounter].exDataType == EX_TYPE_DES)) {
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if (bitArrayGet(&exSensorEnabled, sensorDescriptionCounter)) {
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break;
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}
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}
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@ -397,11 +390,11 @@ uint8_t sendJetiExBusTelemetry(uint8_t packetID, uint8_t item)
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createExTelemetryTextMessage(jetiExTelemetryFrame, sensorDescriptionCounter, &jetiExSensors[sensorDescriptionCounter]);
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createExBusMessage(jetiExBusTelemetryFrame, jetiExTelemetryFrame, packetID);
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requestLoop--;
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if (requestLoop == 0){
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item = firstActiveSensor;
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}
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requestLoop++;
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} else {
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if(item >= activeSensors) {
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item = 0;
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}
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item = createExTelemetryValueMessage(jetiExTelemetryFrame, item);
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createExBusMessage(jetiExBusTelemetryFrame, jetiExTelemetryFrame, packetID);
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}
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@ -411,7 +404,7 @@ uint8_t sendJetiExBusTelemetry(uint8_t packetID, uint8_t item)
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return item;
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}
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#endif // TELEMETRY
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#endif // SERIAL_RX
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