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请问VL53L5CX如何实现超过15HZ的采样？

问答对人有帮助，内容完整，我也想知道答案 0 VL53L5CX如何实现超过15HZ的采样？超频会引发什么现象？ 0 本主题由 Harmony技术专家于 2024-3-12 14:01 审核通过
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答案对人有帮助，有参考价值 0 8x8模式最大可以跑到50Hz，但是要改一下寄存器。 int example17(void){ /// VL53L5CX ranging variables /// uint8_t status, isAlive, isReady, i, j;uint16_t loop;VL53L5CX_Configuration Dev; / Sensor configuration /uint16_t distance[VL53L5CX_RESOLUTION_8X8]; / Array of 64 zones which returns the data /uint32_t timestamp = 0; /// Customer platform /// /* Fill the platform structure with customer's implementation. For this example, only the I2C address is used./Dev.platform.address = VL53L5CX_DEFAULT_I2C_ADDRESS; / (Optional) Reset sensor toggling PINs (see platform, not in API)* ///Reset_Sensor( (Dev.platform)); /* (Optional) Set a new I2C address if the wanted address is different from the default one (filled with 0x20 for this example).///status = vl53l5cx_set_i2c_address( Dev, 0x20); /// Power on sensor and init /// / (Optional) Check if there is a VL53L5CX sensor connected* /status = vl53l5cx_is_alive( Dev, isAlive);if(!isAlive \|\| status){printf("VL53L5CX not detected at requested addressn");return status;} / (Mandatory) Init VL53L5CX sensor /status = vl53l5cx_init( Dev);if(status){printf("VL53L5CX ULD Loading failedn");return status;} printf("VL53L5CX ULD ready ! (Version : %s)n",VL53L5CX_API_REVISION); /// Set some params /// / Program continuous mode (best one for speed) /status = vl53l5cx_set_ranging_mode( Dev, VL53L5CX_RANGING_MODE_CONTINUOUS); / Change resolution. Use 8x8 for this example, but 4x4 is also supported ///status = vl53l5cx_set_resolution( Dev, VL53L5CX_RESOLUTION_8x8); status = vl53l5cx_set_resolution( Dev, VL53L5CX_RESOLUTION_8X8); / Reduce sharpener. This is mandatory as the signal strength is very low /status = vl53l5cx_set_sharpener_percent( Dev, 0); / Increase max frequency. Dedicated function to be created in the future /uint8_t frequency_hz = 50; // Max 4x4: 150 fps / max 8x8: 50 fpsstatus = vl53l5cx_dci_replace_data( Dev, Dev.temp_buffer,VL53L5CX_DCI_FREQ_HZ, 4,(uint8_t) frequency_hz, 1, 0x01); /// Ranging loop /// / Use dedicated start ranging function in “plugin_fast_ranging”* /status = vl53l5cx_start_fast_ranging( Dev); loop = 0;while(loop < 1000){/* Use polling function to know when a new measurement is ready. Another way can be to wait for HW interrupt raised on PIN A3 (GPIO 1) when a new measurement is ready / status = vl53l5cx_check_data_ready( Dev, isReady);if(isReady){ / Get all the distances and decompress them / status = vl53l5cx_get_fast_ranging_data( Dev, distance); / Print 8x8 zones / for(i = 0; i < 8; i++){ for(j = 0; j < 8; j++){ / Check if distance is valid. Max distance has been limited to 2047 mm in the * firmware. When a target status is flagged as invalid, the distance is set to 2048. It * allows to easily detect invalid data. / if(distance[i 8 + j] == VL53L5CX_FAST_RANGING_INVALID_STATUS) { printf("xxxx, "); } else { printf("%4u, ", distance[i * 8 + j]); } } printf("n"); } printf("n"); /* For STM32 only: print the time elapsed since last frame / printf("Time %d msn",(int)(HAL_GetTick() - timestamp)); timestamp = HAL_GetTick(); // loop++;}/ Wait a few ms to avoid too high polling (function in platform * file, not in API) ///WaitMs( (Dev.platform), 5);} / Stop the sensor: use dedicated stop ranging function in “plugin_fast_ranging”* /status = vl53l5cx_stop_fast_ranging( Dev);printf("End of ULD demon");return status;}

2024-3-12 11:38:24 评论举报王建军