Lepton's VIN pin should be connected to RasPI's 3v3 pin. Lepton's CLK pin should be connected to RasPI's SCLK pin. Lepton's MISO pin should be connected to RasPI's MISO pin. Lepton's CS pin should be connected to RasPi's CE1 pin. Lepton's GND pin should be connected to RasPi's ground. In order for the application to run properly, a Lepton camera must be attached in a specific way to the SPI, power, and ground pins of the Raspi's GPIO interface, as well as the I2C SDA/SCL pins: Rebooting the lepton aids in allowing it to achieve sync, this can also be done physically by removing VIN and then conecting VIN again. If video starts on it's own without restart before pressing reset. It is recommended to wait a moment to see Sometimes the lepton will achieve sync after a moment without needing to restart. Packets are recieved similarly to resync-ing using SPI port open and close.
Too long can be achieved by using the lepton_reboot() function with LeptonThread.cpp after too many out of sync Implmenting OEM reboot autimatically when the lepton is out of sync OEM reboot was implmented with this button. If you get a red square without video, click the restart button If you wish to run this application without using sudo, you should add the user "pi" to the usergroup "i2c". To build (will build any SDK dependencies as well):
Flir lepton 3.5 install#
Install the 'qt4-dev-tools' package, which allows compiling of QT applications. Toggle CS of the sensor for 185 ms (see datasheet)Įrror = VoSPI_ReadPacket(&Line, &segment) īut I got 255 all the time.This example has been tested on a Raspberry Pi 3 with Raspbian and a lepton 3.5 module.Įnable the SPI and I2C interfaces on the Pi. The TTT bits of packet 20 contain the segment number in the four highest bits (see datasheet page 56).Įsp_err_t Lepton_GetFrame(Lepton_t* p_Device) The packet is invalid when the first byte of the ID contains "xF" (see datasheet page 48). If(spi_device_polling_transmit(_SPI, &_SPI_Transaction) != ESP_OK) If((p_Line = NULL) || (p_Segment = NULL)) If(strncmp(p_Device->PartNumber, "500-0771-01", 32) = 0)ĮSP_LOGI(TAG, " Radiometric Lepton 3.5") Įlse if(strncmp(p_Device->PartNumber, "500-0726-01", 32) = 0)ĮSP_LOGI(TAG, " Non-radiometric Lepton 3.0") Īnd try to read out a frame: static esp_err_t VoSPI_ReadPacket(uint8_t* p_Line, uint8_t* p_Segment)
P_Init->SPI_Master.max_transfer_sz = p_Device->Width * p_Device->Height Įrror = VoSPI_Init(&p_Init->SPI_Config, &p_Init->SPI_Master, p_Init->SPI_Host, p_Init->SPI_DMA) ĮSP_LOGE(TAG, "VoSPI initialization failed with error %u!", Error) Įrror = CCI_WaitForBoot(&p_Device->Status) ĮSP_LOGE(TAG, "Communication failed with error %u!", Error) ĬCI_GetPartnumber(&p_Device->Status, p_Device->PartNumber) ĮSP_LOGI(TAG, "Found Lepton, part number: %s", p_Device->PartNumber) The application must wait at least 950 ms after deasserting the reset.Įrror = CCI_Init(&p_Init->I2C_Conf, p_Init->I2C_Host) ĮSP_LOGE(TAG, "CCI initialization failed with error %u!", Error) Gpio_set_direction(p_Device->Reset, GPIO_MODE_OUTPUT)
Gpio_set_direction((gpio_num_t)p_Init->SPI_Config.spics_io_num, GPIO_MODE_OUTPUT) Gpio_set_direction(p_Device->VSync, GPIO_MODE_INPUT) _SPI_Transaction.rxlength = LEP_PKT_LENGTH * 0x08 ĮSP_LOGE(TAG, "Failed to allocate Lepton DMA packet buffer!") Įsp_err_t Lepton_Init(Lepton_t* p_Device, Lepton_Conf_t* p_Init) Memset(&_SPI_Transaction, 0x00, sizeof(spi_transaction_t)) _Buffer = (uint8_t*)heap_caps_malloc(LEP_PKT_LENGTH, MALLOC_CAP_DMA) If(spi_bus_initialize(Host, p_Master, DMA) != ESP_OK)ĮSP_LOGE(TAG, "Lepton SPI Master initialization failed!") Įrror = spi_bus_add_device(Host, p_Config, &_SPI) ĮSP_LOGE(TAG, "Failed to add Lepton SPI device!") If((p_Config = NULL) || (p_Master = NULL)) So I initialize the sensor and the VoSPI: esp_err_t VoSPI_Init(spi_device_interface_config_t* p_Config, spi_bus_config_t* p_Master, spi_host_device_t Host, int DMA) I try to read out a Flir Lepton 3.5 Thermal Imaging Sensor with my ESP32, but I got stuck and I don´t find a solution.Ĭhapter 4.2.3.3.1 in the official datasheet gives some additional information about the Re-Establishing Sync of the sensor.
0 kommentar(er)
