Cell modules

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^ Quectel

This section about Quectel cellular modules and supporting tools and documentation. Keywords: BG95 BG96.

Some Quectel documentation. All docs require account creation and login:


Quectel BG95 and BG96 related projects on github: IM Card Configurations

Subdomain at github.io . . .


^ Flashing utility QFirehose

Use of Quectel flashing utility QFirehose:


^ Quectel App Notes

link to Quectel BG95 BG77 BG600L series HTTPS app note:

https://www.quectel.com/wp-content/uploads/2021/03/Quectel_BG95BG77BG600L_Series_HTTPS_Application_Note_V1.1.pdf


^ SIM Card Configurations

Eseye dot com SIM card instructions page:


^ AT command responses

A number of the following commands noted from Quectel forum post https://forums.quectel.com/t/bg95-m3-doesnt-call-callback-function/15647 . . . 

at+qgmr
BG95M3LAR02A03_01.004.01.004

at+qgmr
BG95M3LAR02A03_01.004.01.004

AT+CGPADDR
+CGPADDR: 1,10.163.171.64


at&v
&C: 1
&D: 2
&F: 0
&W: 0
Q: 0
V: 1
X: 1
Z: 0
E: 1
S0: 0
S4: 10
S5: 8
S6: 2
S7: 0
S8: 2
S10: 14
S3: 13

OK
at+csq
+csq: 23,99

OK


Potentially file related: 

AT+QMBNCFG=?List_all"
+QMBNCFG: "list"
+QMBNCFG: "select"[,"<mbn name>"]
+QMBNCFG: "deactivate"
+QMBNCFG: "autosel"[,(0,1)]
+QMBNCFG: "delete","<mbn name>"
+QMBNCFG: "add","<filename>"

OK
AT+QMBNCFG="list"
+QMBNCFG: "list",0,1,1,"ROW_Commercial",0x09010801,201911271
+QMBNCFG: "list",1,0,0,"Commercial-TMO",0x09010500,202003131
+QMBNCFG: "list",2,0,0,"Non_VoLTE-ATT",0x09010300,201910241
+QMBNCFG: "list",3,0,0,"IMSless-Verizon",0x09010100,201911071


More pertinent info on Quectel file read and write access in BGxx modules may be available in https://www.quectel.com/wp-content/uploads/2021/03/Quectel_BG95BG77_FILE_Application_Note_V1.0-2.pdf. 


at+qflst
+QFLST: "security/",2

OK
AT+QMBNCFG="List_all"
ERROR
AT+QMBNCFG=?List_all"
+QMBNCFG: "list"
+QMBNCFG: "select"[,"<mbn name>"]
+QMBNCFG: "deactivate"
+QMBNCFG: "autosel"[,(0,1)]
+QMBNCFG: "delete","<mbn name>"
+QMBNCFG: "add","<filename>"

OK
AT+QMBNCFG="list"
+QMBNCFG: "list",0,1,1,"ROW_Commercial",0x09010801,201911271
+QMBNCFG: "list",1,0,0,"Commercial-TMO",0x09010500,202003131
+QMBNCFG: "list",2,0,0,"Non_VoLTE-ATT",0x09010300,201910241
+QMBNCFG: "list",3,0,0,"IMSless-Verizon",0x09010100,201911071

OK
AT+QFREAD="ROW_Commercial"
+CME ERROR: 400
at+qfopen="ROW_Commercial"
+QFOPEN: 1

OK
AT+QFREAD=?
+QFREAD: <filehandle>[,<length>]

OK
at+qfread=AT+QFREAD=
OK
AT+QFREAD="ROW_Commercial",160
+CME ERROR: 400
AT+QFREAD=1,160
+CME ERROR: 402
AT+QFREAD=1,16
+CME ERROR: 402
at+qfclose=1
OK
at+qfopen="Commercial-TMO"
+QFOPEN: 1

OK
at+qfread=1,5
+CME ERROR: 402
at+qfread=?
+QFREAD: <filehandle>[,<length>]

OK
at+qfread=1
+CME ERROR: 402
at+qfopen
OK
at
OK
at+qflst
+QFLST: "Commercial-TMO",0
+QFLST: "ROW_Commercial",0
+QFLST: "security/",2

Here created a file on "eufs" directory of Quectel file system space: 

OK
at+qflds="eufs"
+QFLDS: 1390592,2435072

OK
at+qflst
+QFLST: "security/",2

OK
at+qfopen="eufs:test",0
+QFOPEN: 20000

OK
at+qfwrite=20000,10
CONNECT
+QFWRITE: 6,6

Here learning how to list files in a directory on BG95 file system space: 

at+qflst
+QFLST: "security/",2

OK
at+qflst="eufs"
+CME ERROR: 417
at+qflst="eufs:*"
+QFLST: "EUFS:test",16
+QFLST: "EUFS:test1",0

OK

Learning how to close and to delete a BG9x file: 

at+qfclose=20000
OK
at+qfdel="EUFS:test"
OK

Excerpt . . . 

at+qfopen="EUFS:test1.txt"
+QFOPEN: 20001

OK
at+qfread=20001
+CME ERROR: 402
at
OK
at+qfread=20001,10
+CME ERROR: 402
at+qfread=20001,16
+CME ERROR: 402
at
OK
at
OK
at+qflst="eufs:*"
+QFLST: "EUFS:test1.txt",0

OK
at+qflst="eufs:/datatx/"
+QFLST: "EUFS:",6

OK
at+qflst="eufs:/datatx/*"
+QFLST: "EUFS:private/",3
+QFLST: "EUFS:test1.txt",15
+QFLST: "EUFS:upgrade_efs/",2
+QFLST: "EUFS:upgrade_nand/",2

OK


^ Quectel AT Upload and Download File Commands

File which describes where in BG9x flash spaces to write two files which are normally part of their SDK sample apps:

  • file:///home/ted/Downloads/Quectel_BG96_QuecOpen_Application_Note_V1.0.pdf . . . see page 18 of 37

File which describes various Quectel AT file commands, including ones to upload to BG module and to download files from module:

  • Quectel_BG95&BG77_FILE_Application_Note_V1.0.pdf


^ Choosing a test-able GPIO for GPIO demo app

We would like to learn to write Quectel BG95 firmware which can control two or more GPIOs of the BG95-Mx module. QuecOpen's demo app to exercise a GPIO contains token ``, which appears many times in source file `example_gpio.c`. Following excerpt shares just some of these symbol appearances:

Excerpt x - QuecOpen gpio demo variable 'g_test_pin_num': 

ted@localhost1:/usr/local/include/quectel/quectel/example/gpio/src$ grep -n g_test_pin_num ./*

149:MODULE_PIN_ENUM  g_test_pin_num = PIN_E_GPIO_01;
267:	IOT_INFO("[GPIO] ### Test pin is %d, gpio_id is %d ###", g_test_pin_num, gpio_map_tbl[g_test_pin_num].gpio_id);
268:	qt_uart_dbg(uart_conf.hdlr, "[GPIO] ### Test pin is %d, gpio_id is %d ###", g_test_pin_num, gpio_map_tbl[g_test_pin_num].gpio_id);
273:	{g_test_pin_num = 32;
274:		gpio_config(g_test_pin_num, QAPI_GPIO_OUTPUT_E, QAPI_GPIO_NO_PULL_E, QAPI_GPIO_2MA_E);	
275:		status = qapi_TLMM_Drive_Gpio(gpio_id_tbl[g_test_pin_num], gpio_map_tbl[g_test_pin_num].gpio_id, QAPI_GPIO_LOW_VALUE_E);
276:		IOT_DEBUG("[GPIO] Set %d QAPI_GPIO_LOW_VALUE_E status = %d", g_test_pin_num, status);
277:		qt_uart_dbg(uart_conf.hdlr,"[GPIO] Set %d QAPI_GPIO_LOW_VALUE_E status = %d", g_test_pin_num, status);
280:		status = qapi_TLMM_Drive_Gpio(gpio_id_tbl[g_test_pin_num], gpio_map_tbl[g_test_pin_num].gpio_id, QAPI_GPIO_HIGH_VALUE_E);
281:		IOT_DEBUG("[GPIO] Set %d QAPI_GPIO_HIGH_VALUE_E status = %d", g_test_pin_num, status);
282:		qt_uart_dbg(uart_conf.hdlr,"[GPIO] Set %d QAPI_GPIO_HIGH_VALUE_E status = %d", g_test_pin_num, status);
285:		status = qapi_TLMM_Release_Gpio_ID(&tlmm_config[g_test_pin_num], gpio_id_tbl[g_test_pin_num]);
 .
 .
 .

This variable is assigned values a couple of different places in the code, though not all these assignments necessarily can we say will happen at a given run time. But these assignments lead us to a symbol which expresses a QuecOpen C based data structure, and this in turn serves to create tables of GPIO pins and pin attributes. Three such pin tables are declared in `example_gpio.c`, one table for each of the modules BG95, BG77 and BG600L.

Following GPIO pin table from QuecOpen gpio demo app: 

 52 /*  !!! This Pin Enumeration Only Applicable BG95-OPEN Project !!!
 53  */
 54  #if defined(_QUECTEL_PROJECT_BG95)
 55 GPIO_MAP_TBL gpio_map_tbl[PIN_E_GPIO_MAX] = {
 56 /* PIN NUM,   PIN NAME,  GPIO ID  GPIO FUNC */
 57     {  4,     "GPIO_01",    24,       0}, 
 58     {  5,     "GPIO_02",    21,       0}, 
 59     {  6,     "GPIO_03",    22,       0}, 
 60     {  7,     "GPIO_04",    23,       0}, 
 61     { 18,     "GPIO_05",     3,       0}, 
 62     { 19,     "GPIO_06",     2,       0}, 
 63     { 22,     "GPIO_07",     1,       0},
    .
    .
    .

From document Quectel_BG95BG77BG600L_Series_QuecOpen_Application_Note_V1.4.pdf, page 23, it appears that BG95 pin 18 has signal/port name GPIO5, which in turn can be configured to be GPIO_3 or I2C1_SCL. This matters because the eval board breaks out a limited number of test pins on J803, J805, J806 and J804. On J804 there is a pin designated as I2C_SCL. In document Quectel_BG95BG77BG600L_Series_QuecOpen_Application_Note_V1.4.pdf there are references only to I2C1, not any other numbered I2C peripheral.


^ References

User manual for UMTS&LTE EVAL KIT:


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