HTTC-AB01 downlink data always failed

#1

how to receiver data. we can transmit data to ChripStack with v0.0.7 library
but download link can’t receive any data from server

image
image.png843×540 28.8 KB

this my receive code from your example (LoRaWan_downlinkdatahandle)
//downlink data handle function example
void downLinkDataHandle(McpsIndication_t *mcpsIndication)
{
Serial.printf("+REV DATA:%s,RXSIZE %d,PORT %d\r\n",mcpsIndication->RxSlot?“RXWIN2”:“RXWIN1”,mcpsIndication->BufferSize,mcpsIndication->Port);
Serial.print("+REV DATA:");
for(uint8_t i=0;iBufferSize;i++)
{
Serial.printf("%02X",mcpsIndication->Buffer[i]);
}
Serial.println();
uint32_t color=mcpsIndication->Buffer[0]<<16|mcpsIndication->Buffer[1]<<8|mcpsIndication->Buffer[2];
#if(LoraWan_RGB==1)
turnOnRGB(color,5000);
turnOffRGB();
#endif
}

#2

how have you triggered chirpstack to send a downlink message?
i dont see a downlink in your screenshot

#3

@wasn,

okay. this my send message screenshot

image
image.png1579×771 27.4 KB

#4

when enable confirmed downlink will recive an ack

image
image.png1177×505 28.4 KB

#5

but serial console no data
image

#6

more testing screenshot

image
image.png1394×828 111 KB

#7

Your serial console says unconfirmed sending.
Try to trigger a downlink with chirpstack and look at the serial console

1 Like
#8

hello @wasn,

maybe I missed something
but I have trigger a downlink on chirpstack
you can check the below picture again,

the serial console always says " unconfirmed sending." due to the example code have send date to chirpstack, and I check chirpstack have got the tx data
my question is the MTCC-AB01 can’t receive any data from chirpstack
even I trigger downlink enqueue

maybe I doing some wrong steps
would you help me to clear the issues?
use v0.0.7 and run example code “LoRaWan_downlinkdatahandle.ino”

image
image.png1817×865 192 KB

#9

On which port are you sending?

#10

uplink using port 2(same example code) or port 3
I try port 3-10 and port 40 port 60 for downlink