Hello all together,
I’m new with the M5 ecosystem and very inspired from this devices.
Now I’m working on a project to control an APA102 digital LED stripe by two TOF distance sensors by Arduino. The APA102 and the two TOF sensors are connected by a PaHUB to a M5stickC Grove port. I’s no problem to read the distances from this sensors through the port extender.
But how I can tell to the FastLED library to use the two I/O pins of the PaHUB Ch.0 to drive the LED stripe?
Thank you very much for any hints.
Greetings from Berlin in Germany
Vaiolux
TOF: Time-of-Flight Distance Ranging Sensor Unit (VL53L0X) | m5stack-store
Pa.HUB: [EOL] I2C Hub 1 to 6 Expansion Unit (TCA9548A) | m5stack-store
M5stickC: M5StickC ESP32-PICO Mini IoT Development Kit | m5stack-store
My code:
// the setup routine runs once when M5Stack starts up
#include <M5StickC.h>
#include <Wire.h>
#include <FastLED.h>
// Defines for VL53L0X TOF sensor
#define VL53L0X_REG_IDENTIFICATION_MODEL_ID 0xc0
#define VL53L0X_REG_IDENTIFICATION_REVISION_ID 0xc2
#define VL53L0X_REG_PRE_RANGE_CONFIG_VCSEL_PERIOD 0x50
#define VL53L0X_REG_FINAL_RANGE_CONFIG_VCSEL_PERIOD 0x70
#define VL53L0X_REG_SYSRANGE_START 0x00
#define VL53L0X_REG_RESULT_INTERRUPT_STATUS 0x13
#define VL53L0X_REG_RESULT_RANGE_STATUS 0x14
#define address 0x29 //the iic address of tof
byte gbuf[16];
uint16_t distance1 = 0;
uint16_t distance2 = 0;
// Defines for Pa.HUB
#define PaHub_I2C_ADDRESS 0X77
// Defines for FastLED
// Use if you want to force the software SPI subsystem to be used for some reason (generally, you don't)
#define FASTLED_FORCE_SOFTWARE_SPI
// Use if you want to force non-accelerated pin access (hint: you really don't, it breaks lots of things)
// #define FASTLED_FORCE_SOFTWARE_SPI
// #define FASTLED_FORCE_SOFTWARE_PINS
// Defines for APA102 LED strip
#define NUM_LEDS 10 // How many leds are in the strip?
#define DATA_PIN 32 // Data pin that led data will be written out over
#define CLOCK_PIN 33 // Clock pin only needed for SPI based chipsets when not using hardware SPI
CRGB leds[NUM_LEDS]; // This is an array of leds. One item for each led in your strip.
void setup() {
M5.begin(); // Initialize the M5Stack object
Wire.begin(); // join i2c bus (address optional for master)
// Uncomment one of the following lines for your leds arrangement.
FastLED.addLeds<APA102, DATA_PIN, CLOCK_PIN, BGR>(leds, NUM_LEDS);
//FastLED.addLeds<APA102, DATA_PIN, CLOCK_PIN, BGR, DATA_RATE_MHZ(12)>(leds, NUM_LEDS);
// LCD display
M5.Lcd.setRotation(1);
M5.Lcd.setTextSize(2);
M5.Lcd.setTextColor(BLACK);
}
void portselectall(uint8_t ports) {
Wire.beginTransmission(PaHub_I2C_ADDRESS);
Wire.write(ports&0x3f);
Wire.endTransmission();
}
void portselect(uint8_t i) {
if (i > 7) return;
Wire.beginTransmission(PaHub_I2C_ADDRESS);
Wire.write(1 << i);
Wire.endTransmission();
}
void led_strip() {
// Move a single led
for(int LedPix = 0; LedPix < NUM_LEDS; LedPix = LedPix + 1) {
leds[LedPix] = CRGB::HotPink;
FastLED.setBrightness(50);
// Show the leds (only one)
FastLED.show();
// Wait a little bit
delay(50);
// Turn our current led back to black for the next loop around
leds[LedPix] = CRGB::Black;
}
}
void loop() {
portselect(1); //Hub range is 0 to 5
delay(10);
distance1 = tof_reed();
portselect(2); //Hub range is 0 to 5
delay(10);
distance2 = tof_reed();
M5.Lcd.fillScreen(0xFF8000);
M5.Lcd.setCursor(0, 0, 1);
M5.Lcd.printf("D1:%d ",distance1);
M5.Lcd.setCursor(0, 15, 1);
M5.Lcd.printf("D2:%d ",distance2);
portselect(0); //Hub range is 0 to 5
delay(10);
led_strip();
}
`