RUI: How to set RUI_I2C_ST - I2C_REG_MAGIC

leopold · December 4, 2019, 2:38am

Hi @fangfchen
I2c_1.PIN_SDA = I2C_SDA ;
I2c_1.PIN_SCL = I2C_SCL ;
RAK811 support 1 fixed I2C,so this two pin can’t modify.Please use default initalization.
How to use the I2C,please refer to app_5205.c :https://github.com/RAKWireless/Products_practice_based_on_RUI/tree/master/based%20on%20RAK811/app_5205

These two commands are valid in RAK811 now.

fangfchen · December 5, 2019, 10:54am

Hi Wang,
What is the default pin number for fixed I2C in RAK811? Different diagram shows different pin number for SDA and SCL.

leopold · December 6, 2019, 1:25am

Hi,@fangfchen
Sorry,this is a negligence. The pin number 18 is I2C_SCL and 19 is I2C_SDA At RAK811 module . I’ll fix it to module pin number.This pin number is fixed for I2C,because RAK811 used hardware i2c,so it can’t remap to other pin.

fangfchen · December 20, 2019, 5:55am

Hi @leopold, do you have BH1750 sample code to share? I can’t read light sensor data.

leopold · December 20, 2019, 6:50am

Hi,@fangfchen
Sorry,we haven’t used the BH1750 sensor.

You’d better refer to its datasheet:https://pdf1.alldatasheet.com/datasheet-pdf/view/350139/ROHM/BH1750FVI.html

oleksander · December 24, 2019, 10:33am

help with rui

When I compile and load code into rak811, the module does not work, nothing happens. I use usb-ttl to download the program. I try to use the program with AT command and it works, but rui do not work

leopold · December 24, 2019, 11:02am

Hi,@oleksander
The firmware that you compiled is based bootloader:https://downloads.rakwireless.com/en/LoRa/RAK811/Firmware/RUI_RAK811_BOOT_Version3_0_2.rar.
So you must download RUI_RAK811_BOOT_Version3_0_2.bin and flash it first,then update your firmware by RAK Upgrade Tool.
You can refer to:https://doc.rakwireless.com/rak811-wisnode-lora-module/upgrading-the-firmware.

oleksander · December 24, 2019, 11:07am

first i upload the bin file and then do the update RAK LoRaButton Upgrade Tool V1.0, where i find file for RAK LoRaButton Upgrade Tool V1.0??

leopold · December 24, 2019, 11:13am

Hi,@oleksander
The above post ends with a link to a reference:https://doc.rakwireless.com/rak811-wisnode-lora-module/upgrading-the-firmware

tools here:https://downloads.rakwireless.com/en/LoRa/RAK612-LoRaButton/Tools/
Burning bootloader guide:https://doc.rakwireless.com/rak811-wisnode-lora-module/burning-the-bootloader-into-the-device

oleksander · December 24, 2019, 11:35am

I have rak811 breakout board, then i do this: qVaOTeklHt

2 step:
i go to https://downloads.rakwireless.com/en/LoRa/RAK811-BreakoutBoard/Firmware/

then i see:

8DVNyJ8GO3

3 step:
I must first download RUI_RAK811_BOOT_Version3_0_2, then download like this:

After this step, I need to do anything???

oleksander · December 24, 2019, 1:05pm

i try how you say, it work, thank

oleksander · December 24, 2019, 1:06pm

how use rui
i want send date to my gateway
I use COiDE

#include “rui.h”
#include “board.h”

static RUI_RETURN_STATUS rui_return_status;
RUI_LORA_STATUS_T app_lora_status; //record status

rui_lora_get_status(false,&app_lora_status);;//The query gets the current device status
static uint8_t sensor_data_cnt=0; //send data counter by LoRa

rui_lora_set_region(EU868);

rui_lora_set_work_mode(RUI_LORAWAN);

rui_lora_set_dev_eui(uint8_t *dev_eui);

rui_lora_set_app_eui(uint8_t *app_eui);

rui_lora_set_app_key(uint8_t *app_key);

rui_lora_set_join_mode(RUI_OTAA);

rui_lora_join();

rui_lora_set_dr(0x05);

/*
RUI_RETURN_STATUS rui_lora_send(uint8_t port,uint8_t* data,uint8_t len)
Copy
@brief rui_lora send
@return RUI_RETURN_STATUS
@param uint8_t port: send data port
uint8_t* data: send data string
uint8_t len: send data length
@module RAK811, RAK4200, and RAK4600 core module.
*/

rui_lora_send(2,“AABBCC”,3);

leopold · December 25, 2019, 1:13am

Hi,@oleksander
Pls refer to :https://doc.rakwireless.com/rak811-wisnode-lora-module/rui-online-compiler

oleksander · December 26, 2019, 8:09am

My code here

#include “rui.h”
#include “board.h”

int main(void)
{
int i;
static RUI_RETURN_STATUS rui_return_status;
RUI_LORA_STATUS_T app_lora_status; //record status

rui_lora_get_status(false,&app_lora_status);;//The query gets the current device status
static uint8_t sensor_data_cnt=0;  //send data counter by LoRa

rui_init();

void rui_uart_recv(RUI_UART1, 2, 1)

while (1) {
rui_lora_get_status(false,&app_lora_status);//The query gets the current status
rui_running();

  for(i=0;i<0x100000;i++);
  rui_lora_set_region(EU868);
  for(i=0;i<0x800000;i++);
  rui_lora_set_work_mode(RUI_LORAWAN);
  for(i=0;i<0x800000;i++);
  rui_lora_set_dev_eui("003EBD495B106225");
  for(i=0;i<0x800000;i++);
  rui_lora_set_app_eui("70B3D57ED0027A86");
  for(i=0;i<0x800000;i++);
  rui_lora_set_app_key("B09751554689810EC3907461A97F29ED");
  for(i=0;i<0x800000;i++);
  rui_lora_set_join_mode(RUI_OTAA);
  for(i=0;i<0x800000;i++);
  rui_lora_join();
  for(i=0;i<0x800000;i++);
  rui_lora_set_dr(0x05);
  for(i=0;i<0x800000;i++);

  rui_lora_send(2,"AABBCC",3);

}
}

leopold · December 26, 2019, 9:18am

Hi,@oleksander
rui_uart_recv() this is callback function when UART receive data.

This function is automatically triggered by data received through the serial port.

oleksander · December 26, 2019, 9:30am

i want to send data without using Uart. It mean my device first get connect with gateway then send data every 1 minute

leopold · December 26, 2019, 10:07am

@oleksander

" for(i=0;i<0x800000;i++);“If you want to delay,RUI has special delay functions"rui_delay_ms(x);”, x unit:ms.

That’s not the right way to write it either,you’d better refer to “lora_config.c”
This

this is the same error,you’d better refer to this usage in app_RAK811.c:

In this case:when RUI_UART1 received data ,then sent these data through lora. Also you can send data directly through lora, but not in the form of a string.
for example:
uint8_t ss[64];
strcpy(ss,“AABBCC”);
rui_lora_send(2,ss,strlen(ss));

oleksander · December 26, 2019, 12:28pm

i corrected my mistakes

MY code

#include “rui.h”
#include “board.h”

int main(void)
{
int i;
static RUI_RETURN_STATUS rui_return_status;
RUI_LORA_STATUS_T app_lora_status; //record status

rui_lora_get_status(false,&app_lora_status);;//The query gets the current device status
static uint8_t sensor_data_cnt=0;  //send data counter by LoRa

rui_init();

char lora_id_1[32] = {'0','0','3','E','B','D','4','9','5','B','1','0','6','2','2','5'};
char lora_id_2[32] = {'7','0','B','3','D','5','7','E','D','0','0','2','7','A','8','6'};
char lora_id_3[32] = {'B','0','9','7','5','1','5','5','4','6','8','9','8','1','0','E','C','3','9','0','7','4','6','1','A','9','7','F','2','9','E','D'};
//'\0'
static uint8_t a[80]={0x33,0x23,0xAA,0xFF};
//void rui_uart_recv(RUI_UART1, 2, 1);

while (1) {

  rui_lora_get_status(false,&app_lora_status);//The query gets the current status
  rui_running();

  rui_delay_ms(1000);
  rui_lora_set_region(EU868);
  rui_delay_ms(1000);
  rui_lora_set_work_mode(RUI_LORAWAN);
  rui_delay_ms(1000);
  rui_lora_set_dev_eui(lora_id_1);
  rui_delay_ms(1000);
  rui_lora_set_app_eui(lora_id_2);
  rui_delay_ms(1000);
  rui_lora_set_app_key(lora_id_3);
  rui_delay_ms(1000);;
  rui_lora_set_join_mode(RUI_OTAA);
  rui_delay_ms(1000);
  rui_lora_join();
  rui_delay_ms(1000);
  rui_lora_set_dr(0x05);
  rui_delay_ms(1000);

  //rui_lora_send(2,"AABBCC",3);
  rui_lora_send(8,a,3);

}
}

THen i compil
chrome_uEHumlOOCN

leopold · December 27, 2019, 1:34am

Hi,@oleksander
You’d better take a look at demo code about RAK811:https://github.com/RAKWireless/Products_practice_based_on_RUI/tree/master/based%20on%20RAK811/app_RAK811

oleksander · December 27, 2019, 7:16am

demo code must use at Command, if i do not want use at command, what i must do?