diff --git a/esp32/include/peripherals/drivers/mpu6050.h b/esp32/include/peripherals/drivers/mpu6050.h index 13cbd4b..c9b50e5 100644 --- a/esp32/include/peripherals/drivers/mpu6050.h +++ b/esp32/include/peripherals/drivers/mpu6050.h @@ -12,31 +12,15 @@ class MPU6050Driver { bool begin() { if (!I2CBus::instance().probe(_addr)) return false; - writeReg(REG_PWR_MGMT_1, 0x80); + uint8_t whoami = readReg(REG_WHO_AM_I); + if (whoami != 0x68 && whoami != 0x72) return false; + + if (dmpInitialize() != 0) return false; + + setDMPEnabled(true); vTaskDelay(pdMS_TO_TICKS(100)); - - writeReg(REG_PWR_MGMT_1, 0x01); - writeReg(REG_PWR_MGMT_2, 0x00); - vTaskDelay(pdMS_TO_TICKS(50)); - - uint8_t who = readReg(REG_WHO_AM_I); - if (who != 0x68 && who != 0x98 && who != 0x72) return false; - - setI2CMasterModeEnabled(false); - setI2CBypassEnabled(true); - setSleepEnabled(false); - - writeReg(REG_SMPLRT_DIV, 4); - writeReg(REG_CONFIG, 0x03); - writeReg(REG_GYRO_CONFIG, 0x00); - writeReg(REG_ACCEL_CONFIG, 0x00); - writeReg(REG_INT_PIN_CFG, 0x02); - writeReg(REG_INT_ENABLE, 0x01); - resetFIFO(); - - setGyroOffsets(0, 0, 0); - setAccelOffsets(0, 0, 0); + vTaskDelay(pdMS_TO_TICKS(50)); _initialized = true; return true; @@ -45,44 +29,18 @@ class MPU6050Driver { bool update() { if (!_initialized) return false; - uint8_t buf[14]; - if (I2CBus::instance().readReg(_addr, REG_ACCEL_XOUT_H, buf, 14) != ESP_OK) return false; - - int16_t rawAx = (buf[0] << 8) | buf[1]; - int16_t rawAy = (buf[2] << 8) | buf[3]; - int16_t rawAz = (buf[4] << 8) | buf[5]; - int16_t rawTemp = (buf[6] << 8) | buf[7]; - int16_t rawGx = (buf[8] << 8) | buf[9]; - int16_t rawGy = (buf[10] << 8) | buf[11]; - int16_t rawGz = (buf[12] << 8) | buf[13]; - - _accel[0] = (rawAx - _accelOffset[0]) / 16384.0f; - _accel[1] = (rawAy - _accelOffset[1]) / 16384.0f; - _accel[2] = (rawAz - _accelOffset[2]) / 16384.0f; - _gyro[0] = (rawGx - _gyroOffset[0]) / 131.0f; - _gyro[1] = (rawGy - _gyroOffset[1]) / 131.0f; - _gyro[2] = (rawGz - _gyroOffset[2]) / 131.0f; - _temp = rawTemp / 340.0f + 36.53f; - - uint32_t now = xTaskGetTickCount() * portTICK_PERIOD_MS; - float dt = (now - _lastUpdate) / 1000.0f; - if (dt <= 0 || dt > 1.0f) dt = 0.02f; - _lastUpdate = now; - - float accelMag = sqrtf(_accel[0] * _accel[0] + _accel[1] * _accel[1] + _accel[2] * _accel[2]); - bool accelValid = (accelMag > 0.8f && accelMag < 1.2f); - - float accelRoll = atan2f(_accel[1], _accel[2]) * RAD2DEG_F; - float accelPitch = atan2f(-_accel[0], sqrtf(_accel[1] * _accel[1] + _accel[2] * _accel[2])) * RAD2DEG_F; - - if (accelValid) { - _roll = ALPHA * (_roll + _gyro[0] * dt) + (1.0f - ALPHA) * accelRoll; - _pitch = ALPHA * (_pitch + _gyro[1] * dt) + (1.0f - ALPHA) * accelPitch; - } else { - _roll += _gyro[0] * dt; - _pitch += _gyro[1] * dt; + if (dmpGetCurrentFIFOPacket(_fifoBuffer)) { + float q[4]; + dmpGetQuaternion(q, _fifoBuffer); + dmpGetGravity(_gravity, q); + dmpGetYawPitchRoll(_rpy, q, _gravity); + } + + uint8_t buf[2]; + if (I2CBus::instance().readReg(_addr, REG_TEMP_OUT_H, buf, 2) == ESP_OK) { + int16_t rawTemp = (buf[0] << 8) | buf[1]; + _temp = rawTemp / 340.0f + 36.53f; } - _yaw += _gyro[2] * dt; return true; } @@ -90,109 +48,21 @@ class MPU6050Driver { bool calibrate() { if (!_initialized) return false; - _gyroOffset[0] = 0; - _gyroOffset[1] = 0; - _gyroOffset[2] = 0; - _accelOffset[0] = 0; - _accelOffset[1] = 0; - _accelOffset[2] = 0; - - int32_t gxSum = 0, gySum = 0, gzSum = 0; - int32_t axSum = 0, aySum = 0, azSum = 0; - int validSamples = 0; - - for (int iteration = 0; iteration < 6; iteration++) { - gxSum = gySum = gzSum = 0; - axSum = aySum = azSum = 0; - validSamples = 0; - - for (int i = 0; i < 100; i++) { - uint8_t buf[14]; - if (I2CBus::instance().readReg(_addr, REG_ACCEL_XOUT_H, buf, 14) != ESP_OK) continue; - - axSum += (int16_t)((buf[0] << 8) | buf[1]); - aySum += (int16_t)((buf[2] << 8) | buf[3]); - azSum += (int16_t)((buf[4] << 8) | buf[5]); - gxSum += (int16_t)((buf[8] << 8) | buf[9]); - gySum += (int16_t)((buf[10] << 8) | buf[11]); - gzSum += (int16_t)((buf[12] << 8) | buf[13]); - validSamples++; - vTaskDelay(pdMS_TO_TICKS(2)); - } - - if (validSamples == 0) return false; - - _gyroOffset[0] += gxSum / validSamples; - _gyroOffset[1] += gySum / validSamples; - _gyroOffset[2] += gzSum / validSamples; - _accelOffset[0] += axSum / validSamples; - _accelOffset[1] += aySum / validSamples; - _accelOffset[2] += (azSum / validSamples) - 16384; - } - - _roll = 0; - _pitch = 0; - _yaw = 0; - _lastUpdate = xTaskGetTickCount() * portTICK_PERIOD_MS; + CalibrateGyro(6); + CalibrateAccel(6); return true; } - void setGyroOffsets(int16_t x, int16_t y, int16_t z) { - uint8_t buf[6] = {static_cast(x >> 8), static_cast(x & 0xFF), - static_cast(y >> 8), static_cast(y & 0xFF), - static_cast(z >> 8), static_cast(z & 0xFF)}; - I2CBus::instance().writeReg(_addr, REG_XG_OFFSET_H, buf, 6); - } - - void setAccelOffsets(int16_t x, int16_t y, int16_t z) { - uint8_t buf[2]; - buf[0] = x >> 8; - buf[1] = x & 0xFF; - I2CBus::instance().writeReg(_addr, REG_XA_OFFSET_H, buf, 2); - buf[0] = y >> 8; - buf[1] = y & 0xFF; - I2CBus::instance().writeReg(_addr, REG_YA_OFFSET_H, buf, 2); - buf[0] = z >> 8; - buf[1] = z & 0xFF; - I2CBus::instance().writeReg(_addr, REG_ZA_OFFSET_H, buf, 2); - } - - void setI2CMasterModeEnabled(bool enabled) { - uint8_t val = readReg(REG_USER_CTRL); - writeReg(REG_USER_CTRL, enabled ? (val | 0x20) : (val & ~0x20)); - } - - void setI2CBypassEnabled(bool enabled) { - uint8_t val = readReg(REG_INT_PIN_CFG); - writeReg(REG_INT_PIN_CFG, enabled ? (val | 0x02) : (val & ~0x02)); - } - - void setSleepEnabled(bool enabled) { - uint8_t val = readReg(REG_PWR_MGMT_1); - writeReg(REG_PWR_MGMT_1, enabled ? (val | 0x40) : (val & ~0x40)); - } - - void resetFIFO() { writeReg(REG_USER_CTRL, readReg(REG_USER_CTRL) | 0x04); } - - void setFIFOEnabled(bool enabled) { - uint8_t val = readReg(REG_USER_CTRL); - writeReg(REG_USER_CTRL, enabled ? (val | 0x40) : (val & ~0x40)); - } - - float getRoll() const { return _roll; } - float getPitch() const { return _pitch; } - float getYaw() const { return _yaw; } + float getRoll() const { return _rpy[2]; } + float getPitch() const { return _rpy[1]; } + float getYaw() const { return _rpy[0]; } float getTemperature() const { return _temp; } - const float* getAccel() const { return _accel; } - const float* getGyro() const { return _gyro; } bool isInitialized() const { return _initialized; } private: - static constexpr uint8_t REG_XG_OFFSET_H = 0x13; - static constexpr uint8_t REG_XA_OFFSET_H = 0x06; - static constexpr uint8_t REG_YA_OFFSET_H = 0x08; - static constexpr uint8_t REG_ZA_OFFSET_H = 0x0A; + static constexpr uint8_t REG_XG_OFFS_USRH = 0x13; + static constexpr uint8_t REG_XA_OFFS_H = 0x06; static constexpr uint8_t REG_SMPLRT_DIV = 0x19; static constexpr uint8_t REG_CONFIG = 0x1A; static constexpr uint8_t REG_GYRO_CONFIG = 0x1B; @@ -200,15 +70,198 @@ class MPU6050Driver { static constexpr uint8_t REG_FIFO_EN = 0x23; static constexpr uint8_t REG_INT_PIN_CFG = 0x37; static constexpr uint8_t REG_INT_ENABLE = 0x38; + static constexpr uint8_t REG_INT_STATUS = 0x3A; static constexpr uint8_t REG_ACCEL_XOUT_H = 0x3B; + static constexpr uint8_t REG_TEMP_OUT_H = 0x41; + static constexpr uint8_t REG_GYRO_XOUT_H = 0x43; + static constexpr uint8_t REG_SIGNAL_PATH_RESET = 0x68; static constexpr uint8_t REG_USER_CTRL = 0x6A; static constexpr uint8_t REG_PWR_MGMT_1 = 0x6B; static constexpr uint8_t REG_PWR_MGMT_2 = 0x6C; + static constexpr uint8_t REG_BANK_SEL = 0x6D; + static constexpr uint8_t REG_MEM_START_ADDR = 0x6E; + static constexpr uint8_t REG_MEM_R_W = 0x6F; + static constexpr uint8_t REG_DMP_CFG_1 = 0x70; + static constexpr uint8_t REG_DMP_CFG_2 = 0x71; static constexpr uint8_t REG_FIFO_COUNT_H = 0x72; static constexpr uint8_t REG_FIFO_R_W = 0x74; static constexpr uint8_t REG_WHO_AM_I = 0x75; - static constexpr float ALPHA = 0.98f; + static constexpr uint16_t DMP_PACKET_SIZE = 28; + static constexpr uint16_t DMP_CODE_SIZE = 3062; + + static constexpr uint8_t dmpMemory[DMP_CODE_SIZE] = { + 0x00, 0xF8, 0xF6, 0x2A, 0x3F, 0x68, 0xF5, 0x7A, 0x00, 0x06, 0xFF, 0xFE, 0x00, 0x03, 0x00, 0x00, 0x00, 0x65, + 0x00, 0x54, 0xFF, 0xEF, 0x00, 0x00, 0xFA, 0x80, 0x00, 0x0B, 0x12, 0x82, 0x00, 0x01, 0x03, 0x0C, 0x30, 0xC3, + 0x0A, 0x74, 0x56, 0x2D, 0x0D, 0x62, 0xDB, 0xC7, 0x16, 0xF4, 0xBA, 0x02, 0x38, 0x83, 0xF8, 0x83, 0x30, 0x00, + 0xF8, 0x83, 0x25, 0x8E, 0xF8, 0x83, 0x30, 0x00, 0xF8, 0x83, 0xFF, 0xFF, 0xFF, 0xFF, 0x0C, 0xBD, 0xD8, 0x11, + 0x24, 0x00, 0x04, 0x00, 0x1A, 0x82, 0x79, 0xA1, 0x00, 0x36, 0x00, 0x3C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, + 0x00, 0x00, 0x38, 0x83, 0x6F, 0xA2, 0x00, 0x3E, 0x03, 0x30, 0x40, 0x00, 0x00, 0x00, 0x02, 0xCA, 0xE3, 0x09, + 0x3E, 0x80, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x60, 0x00, + 0x00, 0x00, 0x1F, 0xA4, 0xE8, 0xE4, 0xFF, 0xF5, 0xDC, 0xB9, 0x00, 0x5B, 0x79, 0xCF, 0x1F, 0x3F, 0x78, 0x76, + 0x00, 0x86, 0x7C, 0x5A, 0x00, 0x86, 0x23, 0x47, 0xFA, 0xB9, 0x86, 0x31, 0x00, 0x74, 0x87, 0x8A, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x43, 0x05, 0xFF, 0xFF, 0xE9, 0xA8, 0x00, 0x00, 0x21, 0x82, 0xFA, 0xB8, 0x4D, 0x46, + 0xFF, 0xFA, 0xDF, 0x3D, 0xFF, 0xFF, 0xB2, 0xB3, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0xBA, 0x98, 0x00, 0x5D, + 0xAC, 0x08, 0x00, 0x0A, 0x63, 0x78, 0x00, 0x01, 0x46, 0x21, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x42, 0xB5, + 0x00, 0x06, 0x00, 0x64, 0x00, 0x64, 0x00, 0x06, 0x14, 0x06, 0x02, 0x9F, 0x0F, 0x47, 0x91, 0x32, 0xD9, 0x0E, + 0x9F, 0xC9, 0x1D, 0xCF, 0x4C, 0x34, 0x3B, 0xB6, 0x7A, 0xE8, 0x00, 0x64, 0x00, 0x06, 0x00, 0xC8, 0x00, 0x00, + 0x00, 0x00, 0xFF, 0xFE, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0xFF, 0xF1, 0x00, 0x00, 0xFA, 0x46, 0x00, 0x00, 0xA2, 0xB8, 0x00, 0x00, + 0x10, 0x00, 0x00, 0x00, 0x04, 0xD6, 0x00, 0x00, 0x04, 0xCC, 0x00, 0x00, 0x04, 0xCC, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x02, + 0x00, 0x05, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x0C, 0x00, 0x05, 0x00, 0x64, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x32, 0xF8, 0x98, 0x00, 0x00, 0xFF, 0x65, + 0x00, 0x00, 0x83, 0x0F, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0xFF, 0xF1, 0x00, 0x00, 0xFA, 0x46, 0x00, 0x00, + 0xA2, 0xB8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x32, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, + 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x0D, 0x00, 0x00, 0xB2, 0x6A, 0x00, 0x02, 0x00, 0x00, 0x00, 0x01, + 0xFB, 0x83, 0x00, 0x7C, 0x00, 0x00, 0xFB, 0x15, 0xFC, 0x00, 0x1F, 0xB4, 0xFF, 0x83, 0x00, 0x00, 0x00, 0x01, + 0x00, 0x65, 0x00, 0x07, 0x00, 0x64, 0x03, 0xE8, 0x00, 0x64, 0x00, 0x28, 0x00, 0x00, 0xFF, 0xFD, 0x00, 0x00, + 0x00, 0x00, 0x16, 0xA0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x2F, 0x00, 0x00, + 0x00, 0x00, 0x01, 0xF4, 0x00, 0x00, 0x10, 0x00, 0x00, 0x28, 0x00, 0x00, 0xFF, 0xFF, 0x45, 0x81, 0xFF, 0xFF, + 0xFA, 0x72, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x44, 0x00, 0x01, 0x00, 0x05, 0xBA, 0xC6, + 0x00, 0x47, 0x78, 0xA2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, + 0x00, 0x14, 0x00, 0x00, 0x23, 0xBB, 0x00, 0x2E, 0xA2, 0x5B, 0x00, 0x00, 0x05, 0x68, 0x00, 0x0B, 0xCF, 0x49, + 0x00, 0x04, 0xFF, 0xFD, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1B, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x64, 0x00, 0x07, + 0x00, 0x08, 0x00, 0x06, 0x00, 0x06, 0xFF, 0xFE, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2E, 0xA2, 0x5B, 0x00, 0x00, 0x05, 0x68, 0x00, 0x0B, 0xCF, 0x49, + 0x00, 0x00, 0x00, 0x00, 0x00, 0xF8, 0xF6, 0x2A, 0x3F, 0x68, 0xF5, 0x7A, 0x00, 0x04, 0xFF, 0xFD, 0x00, 0x02, + 0x00, 0x00, 0x00, 0x1B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0E, 0x00, 0x0E, + 0xFF, 0xFF, 0xFF, 0xCF, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x32, 0xFF, 0xFF, 0xFF, 0x9C, 0x00, 0x00, + 0x43, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x64, 0xFF, 0xE5, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x80, 0x00, 0x00, 0x01, 0x80, 0x00, + 0x00, 0x01, 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0xDF, 0xB9, 0xA3, 0xFE, + 0xF2, 0xAB, 0xC4, 0xAA, 0xF1, 0xDF, 0xDF, 0xBB, 0xAF, 0xDF, 0xDF, 0xA3, 0xA3, 0xA3, 0xD8, 0xD8, 0xD8, 0xBB, + 0xB3, 0xB7, 0xF1, 0xAA, 0xF9, 0xDA, 0xFF, 0xD9, 0x80, 0x9A, 0xAA, 0x28, 0xB4, 0x80, 0x98, 0xA7, 0x20, 0xB7, + 0x97, 0x87, 0xA8, 0x66, 0x88, 0xF0, 0x79, 0x51, 0xF1, 0x90, 0x2C, 0x87, 0x0C, 0xA7, 0x81, 0x97, 0x62, 0x93, + 0xF0, 0x71, 0x71, 0x60, 0x85, 0x94, 0x01, 0x29, 0x51, 0x79, 0x90, 0xA5, 0xF1, 0x28, 0x4C, 0x6C, 0x87, 0x0C, + 0x95, 0x18, 0x85, 0x78, 0xA3, 0x83, 0x90, 0x28, 0x4C, 0x6C, 0x88, 0x6C, 0xD8, 0xF3, 0xA2, 0x82, 0x00, 0xF2, + 0x10, 0xA8, 0x92, 0x19, 0x80, 0xA2, 0xF2, 0xD9, 0x26, 0xD8, 0xF1, 0x88, 0xA8, 0x4D, 0xD9, 0x48, 0xD8, 0x96, + 0xA8, 0x39, 0x80, 0xD9, 0x3C, 0xD8, 0x95, 0x80, 0xA8, 0x39, 0xA6, 0x86, 0x98, 0xD9, 0x2C, 0xDA, 0x87, 0xA7, + 0x2C, 0xD8, 0xA8, 0x89, 0x95, 0x19, 0xA9, 0x80, 0xD9, 0x38, 0xD8, 0xA8, 0x89, 0x39, 0xA9, 0x80, 0xDA, 0x3C, + 0xD8, 0xA8, 0x2E, 0xA8, 0x39, 0x90, 0xD9, 0x0C, 0xD8, 0xA8, 0x95, 0x31, 0x98, 0xD9, 0x0C, 0xD8, 0xA8, 0x09, + 0xD9, 0xFF, 0xD8, 0x01, 0xDA, 0xFF, 0xD8, 0x95, 0x39, 0xA9, 0xDA, 0x26, 0xFF, 0xD8, 0x90, 0xA8, 0x0D, 0x89, + 0x99, 0xA8, 0x10, 0x80, 0x98, 0x21, 0xDA, 0x2E, 0xD8, 0x89, 0x99, 0xA8, 0x31, 0x80, 0xDA, 0x2E, 0xD8, 0xA8, + 0x86, 0x96, 0x31, 0x80, 0xDA, 0x2E, 0xD8, 0xA8, 0x87, 0x31, 0x80, 0xDA, 0x2E, 0xD8, 0xA8, 0x82, 0x92, 0xF3, + 0x41, 0x80, 0xF1, 0xD9, 0x2E, 0xD8, 0xA8, 0x82, 0xF3, 0x19, 0x80, 0xF1, 0xD9, 0x2E, 0xD8, 0x82, 0xAC, 0xF3, + 0xC0, 0xA2, 0x80, 0x22, 0xF1, 0xA6, 0x2E, 0xA7, 0x2E, 0xA9, 0x22, 0x98, 0xA8, 0x29, 0xDA, 0xAC, 0xDE, 0xFF, + 0xD8, 0xA2, 0xF2, 0x2A, 0xF1, 0xA9, 0x2E, 0x82, 0x92, 0xA8, 0xF2, 0x31, 0x80, 0xA6, 0x96, 0xF1, 0xD9, 0x00, + 0xAC, 0x8C, 0x9C, 0x0C, 0x30, 0xAC, 0xDE, 0xD0, 0xDE, 0xFF, 0xD8, 0x8C, 0x9C, 0xAC, 0xD0, 0x10, 0xAC, 0xDE, + 0x80, 0x92, 0xA2, 0xF2, 0x4C, 0x82, 0xA8, 0xF1, 0xCA, 0xF2, 0x35, 0xF1, 0x96, 0x88, 0xA6, 0xD9, 0x00, 0xD8, + 0xF1, 0xFF}; void writeReg(uint8_t reg, uint8_t val) { I2CBus::instance().writeReg(_addr, reg, &val, 1); } @@ -218,15 +271,238 @@ class MPU6050Driver { return val; } + void writeBit(uint8_t reg, uint8_t bit, uint8_t val) { + uint8_t b = readReg(reg); + b = val ? (b | (1 << bit)) : (b & ~(1 << bit)); + writeReg(reg, b); + } + + void writeBits(uint8_t reg, uint8_t startBit, uint8_t len, uint8_t val) { + uint8_t b = readReg(reg); + uint8_t mask = ((1 << len) - 1) << (startBit - len + 1); + val <<= (startBit - len + 1); + b = (b & ~mask) | (val & mask); + writeReg(reg, b); + } + + void setDMPEnabled(bool enabled) { writeBit(REG_USER_CTRL, 7, enabled ? 1 : 0); } + + uint16_t getFIFOCount() { + uint8_t buf[2]; + I2CBus::instance().readReg(_addr, REG_FIFO_COUNT_H, buf, 2); + return (buf[0] << 8) | buf[1]; + } + + void resetFIFO() { writeBit(REG_USER_CTRL, 2, 1); } + + void setMemoryBank(uint8_t bank) { writeReg(REG_BANK_SEL, bank & 0x1F); } + + void setMemoryStartAddress(uint8_t address) { writeReg(REG_MEM_START_ADDR, address); } + + bool writeMemoryBlock(const uint8_t* data, uint16_t dataSize, uint8_t bank, uint8_t address) { + uint8_t chunkSize; + uint16_t i = 0; + + setMemoryBank(bank); + setMemoryStartAddress(address); + + while (i < dataSize) { + chunkSize = 16; + if (i + chunkSize > dataSize) chunkSize = dataSize - i; + if (address + chunkSize > 256) chunkSize = 256 - address; + + I2CBus::instance().writeReg(_addr, REG_MEM_R_W, data + i, chunkSize); + + i += chunkSize; + address += chunkSize; + + if (address == 0 || address >= 256) { + address = 0; + bank++; + setMemoryBank(bank); + } + + if (address > 0) { + setMemoryStartAddress(address); + } + } + return true; + } + + int dmpInitialize() { + writeBit(REG_PWR_MGMT_1, 7, 1); + vTaskDelay(pdMS_TO_TICKS(100)); + + writeBits(REG_USER_CTRL, 2, 3, 0b111); + vTaskDelay(pdMS_TO_TICKS(100)); + + writeReg(REG_PWR_MGMT_1, 0x01); + writeReg(REG_INT_ENABLE, 0x00); + writeReg(REG_FIFO_EN, 0x00); + writeReg(REG_ACCEL_CONFIG, 0x00); + writeReg(REG_INT_PIN_CFG, 0x82); + writeReg(REG_PWR_MGMT_1, 0x01); + writeReg(REG_SMPLRT_DIV, 0x04); + writeReg(REG_CONFIG, 0x01); + + if (!writeMemoryBlock(dmpMemory, DMP_CODE_SIZE, 0, 0)) return 1; + + uint8_t verify[2]; + setMemoryBank(0); + setMemoryStartAddress(0); + I2CBus::instance().readReg(_addr, REG_MEM_R_W, verify, 2); + if (verify[0] != 0x00 || verify[1] != 0xF8) return 2; + + uint8_t dmpStart[2] = {0x04, 0x00}; + I2CBus::instance().writeReg(_addr, REG_DMP_CFG_1, dmpStart, 2); + + writeReg(REG_GYRO_CONFIG, 0x18); + writeReg(REG_USER_CTRL, 0xC0); + writeReg(REG_INT_ENABLE, 0x02); + resetFIFO(); + + setDMPEnabled(false); + + return 0; + } + + bool dmpGetCurrentFIFOPacket(uint8_t* data) { + int16_t fifoC = getFIFOCount(); + + if (fifoC > 200) { + resetFIFO(); + uint32_t start = xTaskGetTickCount(); + fifoC = 0; + while (!fifoC && (xTaskGetTickCount() - start) < pdMS_TO_TICKS(100)) { + vTaskDelay(pdMS_TO_TICKS(2)); + fifoC = getFIFOCount(); + } + } else if (fifoC > DMP_PACKET_SIZE) { + uint8_t trash[32]; + while ((fifoC = getFIFOCount()) > DMP_PACKET_SIZE) { + uint16_t toRemove = fifoC - DMP_PACKET_SIZE; + while (toRemove > 0) { + uint8_t chunk = (toRemove < 32) ? toRemove : 32; + I2CBus::instance().readReg(_addr, REG_FIFO_R_W, trash, chunk); + toRemove -= chunk; + } + } + } + + if (!fifoC) return false; + if (fifoC != DMP_PACKET_SIZE) return false; + + I2CBus::instance().readReg(_addr, REG_FIFO_R_W, data, DMP_PACKET_SIZE); + return true; + } + + void dmpGetQuaternion(float* q, const uint8_t* packet) { + int16_t qI[4]; + qI[0] = (packet[0] << 8) | packet[1]; + qI[1] = (packet[4] << 8) | packet[5]; + qI[2] = (packet[8] << 8) | packet[9]; + qI[3] = (packet[12] << 8) | packet[13]; + q[0] = qI[0] / 16384.0f; + q[1] = qI[1] / 16384.0f; + q[2] = qI[2] / 16384.0f; + q[3] = qI[3] / 16384.0f; + } + + void dmpGetGravity(float* g, const float* q) { + g[0] = 2.0f * (q[1] * q[3] - q[0] * q[2]); + g[1] = 2.0f * (q[0] * q[1] + q[2] * q[3]); + g[2] = q[0] * q[0] - q[1] * q[1] - q[2] * q[2] + q[3] * q[3]; + } + + void dmpGetYawPitchRoll(float* ypr, const float* q, const float* gravity) { + ypr[0] = atan2f(2.0f * q[1] * q[2] - 2.0f * q[0] * q[3], 2.0f * q[0] * q[0] + 2.0f * q[1] * q[1] - 1.0f); + ypr[1] = atan2f(gravity[0], sqrtf(gravity[1] * gravity[1] + gravity[2] * gravity[2])); + ypr[2] = atan2f(gravity[1], gravity[2]); + if (gravity[2] < 0) { + if (ypr[1] > 0) { + ypr[1] = M_PI - ypr[1]; + } else { + ypr[1] = -M_PI - ypr[1]; + } + } + } + + void CalibrateGyro(int loops) { + float kP = 0.3f; + float kI = 90.0f; + float x = (100.0f - (loops < 1 ? 20 : (loops > 5 ? 0 : 20 - (loops - 1) * 5))) * 0.01f; + kP *= x; + kI *= x; + PID(REG_GYRO_XOUT_H, kP, kI, loops); + } + + void CalibrateAccel(int loops) { + float kP = 0.3f; + float kI = 20.0f; + float x = (100.0f - (loops < 1 ? 20 : (loops > 5 ? 0 : 20 - (loops - 1) * 5))) * 0.01f; + kP *= x; + kI *= x; + PID(REG_ACCEL_XOUT_H, kP, kI, loops); + } + + void PID(uint8_t readAddr, float kP, float kI, int loops) { + uint8_t saveAddr = (readAddr == REG_ACCEL_XOUT_H) ? REG_XA_OFFS_H : REG_XG_OFFS_USRH; + uint8_t shift = (readAddr == REG_ACCEL_XOUT_H) ? 2 : 2; + + int16_t data; + float reading; + int16_t bitZero[3] = {0, 0, 0}; + float iTerm[3] = {0, 0, 0}; + int16_t gravity = 16384; + + for (int i = 0; i < 3; i++) { + uint8_t buf[2]; + I2CBus::instance().readReg(_addr, saveAddr + (i * shift), buf, 2); + data = (buf[0] << 8) | buf[1]; + reading = data; + if (readAddr == REG_ACCEL_XOUT_H) { + bitZero[i] = data & 1; + iTerm[i] = reading * 8.0f; + } else { + iTerm[i] = reading * 4.0f; + } + } + + for (int l = 0; l < loops; l++) { + for (int c = 0; c < 100; c++) { + for (int i = 0; i < 3; i++) { + uint8_t buf[2]; + I2CBus::instance().readReg(_addr, readAddr + (i * 2), buf, 2); + data = (buf[0] << 8) | buf[1]; + reading = data; + + if (readAddr == REG_ACCEL_XOUT_H && i == 2) reading -= gravity; + + float error = -reading; + float pTerm = kP * error; + iTerm[i] += (error * 0.001f) * kI; + + if (readAddr == REG_ACCEL_XOUT_H) { + data = (int16_t)roundf((pTerm + iTerm[i]) / 8.0f); + data = (data & 0xFFFE) | bitZero[i]; + } else { + data = (int16_t)roundf((pTerm + iTerm[i]) / 4.0f); + } + + uint8_t outBuf[2] = {(uint8_t)(data >> 8), (uint8_t)(data & 0xFF)}; + I2CBus::instance().writeReg(_addr, saveAddr + (i * shift), outBuf, 2); + } + vTaskDelay(pdMS_TO_TICKS(1)); + } + kP *= 0.75f; + kI *= 0.75f; + } + } + uint8_t _addr; bool _initialized = false; - float _accel[3] = {0}; - float _gyro[3] = {0}; - int16_t _gyroOffset[3] = {0}; - int16_t _accelOffset[3] = {0}; + uint8_t _fifoBuffer[DMP_PACKET_SIZE]; + float _gravity[3] = {0}; + float _rpy[3] = {0}; float _temp = 0; - float _roll = 0; - float _pitch = 0; - float _yaw = 0; - uint32_t _lastUpdate = 0; };