Question: ReSpeakerLED.c file modification for more LESs

[jabulonboaz]

Hello Dimeiza

For the respeker 2 mic hat, where in your code can i change the number of LEDs from 3 to 9 please? I am using a Respeaker 2 mic hat and I have added a strip of 9 additional APA102 LEDs but only 3 of them light up (3 on the Respeaker board and 3 on my LED strip). I tested the LED strip it works for sure.

I tried to modify your code like this but i cant make all 9 LEDs to light up. Please refer to the line bellow uint8_t led_rgb_data_2Mic[8][12] = {

/*

• RespeakerLED.c
• Copyright 2018 dimeiza. All Rights Reserved.
• Licensed to the Apache Software Foundation (ASF) under one
• or more contributor license agreements. See the NOTICE file
• distributed with this work for additional information
• regarding copyright ownership. The ASF licenses this file
• to you under the Apache License, Version 2.0 (the
• "License"); you may not use this file except in compliance
• with the License. You may obtain a copy of the License at
• http://www.apache.org/licenses/LICENSE-2.0
• Unless required by applicable law or agreed to in writing,
• software distributed under the License is distributed on an
• "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
• KIND, either express or implied. See the License for the
• specific language governing permissions and limitations
• under the License. */

include

include

include

include

include

include

include <sys/ioctl.h>

include <linux/types.h>

include <linux/spi/spidev.h>

include

define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))

static void pabort(const char *s) { perror(s); abort(); }

static const char *device = "/dev/spidev0.1"; static uint8_t mode; static uint8_t bits = 8; static uint32_t speed = 800000; static uint16_t delay;

struct LEDPatternRecord { char *LEDPatternName; int LEDPatternIndex; };

struct MicHatRecord { char *MicName; int MicID; };

static const struct MicHatRecord MicList[] = { { "2mic", 0 }, { "4mic", 1 }, };

static const struct LEDPatternRecord LEDPatternList[] = { {"LED_TURN_OFF",0,}, {"ALEXA_LISTENING",1}, {"ALEXA_THINKING",2}, {"ALEXA_SPEAKING",3},

{"GOOGLEASSISTANT_ON_CONVERSATION_TURN_STARTED",4},
{"GOOGLEASSISTANT_ON_RECOGNIZING_SPEECH_FINISHED",5},
{"GOOGLEASSISTANT_ON_RESPONDING_STARTED",6},

};

uint8_t led_rgb_data_4Mic[8][48] = {

//  LED_TURN_OFF
{255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0,  255, 0, 0, 0,   255, 0, 0, 0,   255, 0, 0, 0,   255, 0, 0, 0,   255, 0, 0, 0, },

// ALEXA_LISTENING
{255, 24, 0, 0,255, 24, 0, 0, 255, 24, 0, 0,255, 24, 0, 0,255, 24, 0, 0,255, 24, 0, 0,255, 24, 48, 0,   255, 24, 0, 0,255, 24, 0, 0,    255, 24, 0, 0,  255, 24, 0, 0,  255, 24, 0, 0},

// ALEXA_THINKING
{255, 12, 12, 0, 255, 24, 0, 0, 255, 12, 12, 0, 255, 24, 0, 0, 255, 12, 12, 0, 255, 24, 0, 0, 255, 12, 12, 0, 255, 24, 0, 0, 255, 12, 12, 0, 255, 24, 0, 0, 255, 12, 12, 0, 255, 24, 0, 0},

// ALEXA_SPEAKING
{255, 12, 12, 0, 255, 12, 12, 0, 255, 12, 12, 0, 255, 12, 12, 0, 255, 12, 12, 0, 255, 12, 12, 0, 255, 12, 12, 0, 255, 12, 12, 0, 255, 12, 12, 0, 255, 12, 12, 0, 255, 12, 12, 0, 255, 12, 12, 0},

// GOOGLEASSISTANT_ON_CONVERSATION_TURN_STARTED
{255, 48, 0, 0,     255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 48, 255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 24, 24, 255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 48, 0, 255, 0, 0, 0, 255, 0, 0, 0},

// GOOGLEASSISTANT_ON_RESPONDING_STARTED
{255, 48, 0, 0, 255, 48, 0, 0, 255, 0, 0, 0, 255, 0, 0, 48, 255, 0, 0, 48, 255, 0, 0, 0, 255, 0, 24, 24, 255, 0, 24, 24, 255, 0,0,0, 255, 0, 48, 0, 255, 0, 48, 0, 255, 0, 0, 0},

// GOOGLEASSISTANT_ON_RECOGNIZING_SPEECH_FINISHED
{255, 48, 0, 0, 255, 48, 0, 0, 255, 48, 0, 0, 255, 0, 0, 48, 255, 0, 0, 48, 255, 0, 0, 48, 255, 0, 24, 24, 255, 0, 24, 24, 255, 0, 24, 24, 255, 0, 48, 0, 255, 0, 48, 0, 255, 0, 48, 0},

};

**uint8_t led_rgb_data_2Mic[8][12] = {

//  LED_TURN_OFF
    {255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0,  255, 0, 0, 0,   255, 0, 0, 0, },
//{255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, },

// ALEXA_LISTENING
{255, 24, 0, 0,255, 24, 0, 0, 255, 24, 0, 0,255, 24, 0, 0,255, 24, 0, 0,255, 24, 0, 0,255, 24, 48, 0,   255, 24, 0, 0,255, 24, 0, 0},
    //{255, 48, 0, 0, 255, 255, 255, 255,255, 48, 0, 0,},

// ALEXA_THINKING
    {255, 12, 12, 0, 255, 24, 0, 0, 255, 12, 12, 0, 255, 24, 0, 0, 255, 12, 12, 0, 255, 24, 0, 0, 255, 12, 12, 0, 255, 24, 0, 0, 255, 12, 12, 0},
//{255, 48, 0, 0, 255, 24, 24, 0, 255, 48, 0, 0,} ,

// ALEXA_SPEAKING
    {255, 12, 12, 0, 255, 12, 12, 0, 255, 12, 12, 0, 255, 12, 12, 0, 255, 12, 12, 0, 255, 12, 12, 0, 255, 12, 12, 0, 255, 12, 12, 0, 255, 12, 12, 0},
//{255, 12, 12, 0, 255, 12, 12, 0, 255, 12, 12, 0, },**

// GOOGLEASSISTANT_ON_CONVERSATION_TURN_STARTED
{255, 0, 48, 0, 255, 0, 0, 0, 255, 0, 0, 0,},

// GOOGLEASSISTANT_ON_RECOGNIZING_SPEECH_FINISHED
{255, 0, 48, 0, 255, 48, 0, 0, 255, 0, 0, 0,},

// GOOGLEASSISTANT_ON_RESPONDING_STARTED
{255, 0, 48, 0, 255, 48, 0, 0,255, 0, 0, 48, },

};

uint8_t startFrame[] = { 0x00, 0x00, 0x00, 0x00 };

uint8_t endFrame[] = { 0x00,0x00 };

static int getMicID(char *MicName){

for(int i = 0;i < ARRAY_SIZE(MicList);i++){
    if(!strcmp(MicList[i].MicName,MicName)){
        return MicList[i].MicID;
    }
}
return -1;

} static int getLEDPatternIndex(char *LEDPatternName){

for(int i = 0;i < ARRAY_SIZE(LEDPatternList);i++){
    if(!strcmp(LEDPatternList[i].LEDPatternName,LEDPatternName)){
        return LEDPatternList[i].LEDPatternIndex;
    }
}

return -1;

}

static int sendSPI(int fd,unsigned char *sendData,int length){

int ret;
uint8_t rx[256] = {0};

struct spi_ioc_transfer transferMessage = {
    .tx_buf = (unsigned long)sendData,
    .rx_buf = (unsigned long)rx,
    .len = length,
    .delay_usecs = delay,
    .speed_hz = speed,
    .bits_per_word = bits,
};

return ioctl(fd, SPI_IOC_MESSAGE(1), &transferMessage);

}

static void controlLED(int hatID ,int pattern){

uint8_t *LEDPattern = NULL;
int patternLength = 0; 

int fd = open(device, O_RDWR);
if (fd < 0){
    pabort("can't open device");
}

switch(hatID){
    case 0:
        LEDPattern = led_rgb_data_2Mic[pattern];
        patternLength = ARRAY_SIZE(led_rgb_data_2Mic[pattern]);
        break;
    case 1:
        LEDPattern = led_rgb_data_4Mic[pattern];
        patternLength = ARRAY_SIZE(led_rgb_data_4Mic[pattern]);
        break;
    default:
        pabort("This hat is not supported.");
        break;
}

// If we want to use the APA102 RGB LEDs, please write HIGH to GPIO5 first to enable VCC of the LEDs.
system("gpio -g mode 5 out");
system("gpio -g write 5 1");

if(sendSPI(fd,startFrame,ARRAY_SIZE(startFrame)) < 1){
    pabort("can't send start frame");
}

if(sendSPI(fd,LEDPattern,patternLength) < 1){
    pabort("can't send LED Control Data");
}

if(sendSPI(fd,endFrame,ARRAY_SIZE(endFrame)) < 1){
    pabort("can't send end frame");
}

close(fd);

}

static const struct option lopts[] = { { "device", 1, 0, 'D' }, { NULL, 0, 0, 0 }, };

static void print_usage(const char *prog) { printf("Usage: %s [-D] pattern-name\n", prog); puts("-D --device device to use (2mic or 4mic, default:2mic)");

puts("pattern-name  LED pattern name ");
for(int i = 0;i < ARRAY_SIZE(LEDPatternList);i++){
    puts(LEDPatternList[i].LEDPatternName);
}

exit(1);

}

int main(int argc, char *argv[]) { int pattern = 0; int hatID = 3;

int c;
char *target="2mic";

c = getopt_long(argc, argv, "D:",lopts, NULL);

switch (c) {
    case 'D':
        target = optarg;
        break;
}

hatID = getMicID(target);
if(hatID == -1){
    print_usage(argv[0]);
}

if(argv[optind] == NULL){
    print_usage(argv[0]);
}
pattern = getLEDPatternIndex(argv[optind]);
if(pattern == -1){
    print_usage(argv[0]);
}

controlLED(hatID,pattern);

return 0;

}

[Dimeiza]

I don't know about additional LEDs, but maybe it is caused LED control data haven't been transmitted completely because an array size is small.

If you modify "led_rgb_data_2Mic[8][12]" to "led_rgb_data_2Mic[8][36], it may work well.

[jabulonboaz]

I tried it did not work. Any other suggestions please?

[Dimeiza]

Unfortunately, I can't give any advice for your customized device.

Why don't you ask Seeed?

[jabulonboaz]

Sure i can ask them but i though to ask you first as the code has your copyright. "Copyright 2018 dimeiza. All Rights Reserved." So since you wrote the code i thought you would know which variable to change to increase the LED number. So far i have only found seed's code for Google Assistant LED patern and i am using that "pixel.py" and it has a variable LEDNUM so i change that and it works. But to create Alexa LED patern i am using your code.