[TangerineSDR] Magnetometer bring up issues
Bob Stricklin
bstrick at N5BRG.COM
Fri Jul 7 22:48:17 EDT 2023
I managed to get this working by forcing the proper address in the header files as shown below. My guess is the developers had HAT pcbs and remote pcbs that had all the parts populated. The TAPR boards only have parts on the remote boards. The code is not dealing with this properly or I did not set some flag I was supposed to set.
This is what makes it function:
device_defs.h
//-------------------------------------------
// Address of the device changed N5BRG 7/7/2023
//-------------------------------------------
// #define RM3100_I2C_ADDRESS 0x20
// #define RM3100_I2C_ADDRESS_7bit 0x20
// #define RM3100_I2C_ADDRESS_8bit 0x20 << 1 // MBED uses 8 bit address
#define RM3100_I2C_ADDRESS 0x23
#define RM3100_I2C_ADDRESS_7bit 0x23
#define RM3100_I2C_ADDRESS_8bit 0x23 << 1 // MBED uses 8 bit address
MCP9808.h
// MCP9808 Bus Address.
//-----------------------------------
//#define MCP9808_LCL_I2CADDR_DEFAULT 0x18 // alt: (selected by chip hardware 0x18 - 0x1F
//#define MCP9808_RMT_I2CADDR_DEFAULT 0x19 // alt: (selected by chip hardware 0x18 - 0x1F
// Changed N5BRG 7/7/2023
#define MCP9808_LCL_I2CADDR_DEFAULT 0x1F // alt: (selected by chip hardware 0x18 - 0x1F
#define MCP9808_RMT_I2CADDR_DEFAULT 0x1F // alt: (selected by chip hardware 0x18 - 0x1F
I see the MEMORY chip is on a different i2c bus and don’t think I have this one function yet. I figured the idea was to put calibration info in that chip.
I plane to look a little more into that issue and get it working before I put the remote sensor in the ground.
Bob N5BRG
On Jul 7, 2023, at 4:29 PM, Bob Stricklin via TangerineSDR <tangerinesdr at lists.tapr.org<mailto:tangerinesdr at lists.tapr.org>> wrote:
I am trying to get the TAPR supplied magnetometer working and having some problems.
After cloning Dave's GitHub and running make I see this output:
pi at Fox-in-box-v3:~/rm3100-runMag $ ls
CHANGES.txt cmdmgr.h device_defs.h i2c.c i2c.o logs main.h MCP9808.h README.md runMag.c runMag.o runrun.sh
cmdmgr.c cmdmgr.o docs i2c.h LICENSE main.c Makefile metadata.json runMag runMag.h run-nopipe.sh
pi at Fox-in-box-v3:~/rm3100-runMag $ cat runrun.sh
./runMag -b 1 -j -M 23 -A 10 -c 400 -U 140 -Z > /home/web/wsroot/pipein.fifo
pi at Fox-in-box-v3:~/rm3100-runMag $ mkdir test/
pi at Fox-in-box-v3:~/rm3100-runMag $ ./runMag -b 1 -j -M 23 -A 10 -c 400 -U 140 -Z > ./test/pipein.fifo
./runMag: invalid option -- 'U'
pi at Fox-in-box-v3:~/rm3100-runMag $ ./runMag -b 1 -j -M 23 -A 10 -c 400 -Z > ./test/pipein.fifo
Error : I/O error reading temp sensor at address: [0x19].
Error : I/O error reading temp sensor at address: [0x18].
Error : I/O error reading temp sensor at address: [0x19].
Error : I/O error reading temp sensor at address: [0x18].
pi at Fox-in-box-v3:~/rm3100-runMag $ ./runMag -M 23 -m
"time", "rtemp", "ltemp", "x", "y", "z", "rx", "ry", "rz", "total"
"07 Jul 2023 21:04:38", 15.1029, -19.0455, 45.8655, 134, -169, 407
"07 Jul 2023 21:04:38", 15.0998, -19.0481, 45.8631, 134, -169, 407
"07 Jul 2023 21:04:39", 15.0984, -19.0519, 45.8628, 134, -169, 407
"07 Jul 2023 21:04:40", 15.0972, -19.0479, 45.8633, 134, -169, 407
"07 Jul 2023 21:04:41", 15.0957, -19.0515, 45.8711, 134, -169, 407
^C
pi at Fox-in-box-v3:~/rm3100-runMag $ ./runMag -L 1f -l
i2c_writebuf(): write(): Remote I/O error
i2c_read read value.: Remote I/O error
RM3100 REVID NOT CORRECT: RM3100 REVID: 0x0 <> EXPECTED: 0x22.
pi at Fox-in-box-v3:~/rm3100-runMag $ ./runMag -L 0x1f -l
i2c_writebuf(): write(): Remote I/O error
i2c_read read value.: Remote I/O error
RM3100 REVID NOT CORRECT: RM3100 REVID: 0x0 <> EXPECTED: 0x22.
pi at Fox-in-box-v3:~/rm3100-runMag $ ./runMag -L 0x1F -l
i2c_writebuf(): write(): Remote I/O error
i2c_read read value.: Remote I/O error
RM3100 REVID NOT CORRECT: RM3100 REVID: 0x0 <> EXPECTED: 0x22.
pi at Fox-in-box-v3:~/rm3100-runMag $ sudo ./runMag -L 0x1f -l
i2c_writebuf(): write(): Remote I/O error
i2c_read read value.: Remote I/O error
RM3100 REVID NOT CORRECT: RM3100 REVID: 0x0 <> EXPECTED: 0x22.
Raspberry Pi 3B: (Also tried a few other Raspberry Pi units.)
used sudo raspi-config to activate I2C
Then I edited /boot/config.txt to add:
dtoverlay=i2c-gpio,bus=3,i2c_gpio_delay_us=1,i2c_gpio_sda=28,i2c_gpio_scl=27
pi at Fox-in-box-v3:~ $ i2cdetect -l
i2c-3 i2c 3.i2c I2C adapter
i2c-1 i2c bcm2835 (i2c at 7e804000) I2C adapter
pi at Fox-in-box-v3:~ $ i2cdetect -y 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 1f
20: -- -- -- 23 -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
pi at Fox-in-box-v3:~ $ i2cdetect -y 3
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
pi at Fox-in-box-v3:~ $ i2cdetect -y 2
Error: Could not open file `/dev/i2c-2' or `/dev/i2c/2': No such file or directory
pi at Fox-in-box-v3:~ $ i2cdetect -y 4
Error: Could not open file `/dev/i2c-4' or `/dev/i2c/4': No such file or directory
pi at Fox-in-box-v3:~ $
Results:
Looks like the magnetic sensors may be responding but the temp sensor is not responding to reads. The temp sensor does show up as a valid i2c address though.
I noticed the memory chip on local and on remote is not responding with address A0 and this device in on the same i2c bus it seems. According to the data sheet
without the jumper installed on WP it should be working in read mode. I put the jumper on and still do not see the device with i2cdetect -y 1. If this is not being used for
anything else I would prefer to put the jumper on WP and allow it to be used in the ground after being buried. With WP pulled high the chip is still pulling 1 - 2 ma anyway.
I would appreciate any comments on what else should be done to get this working so I can put the unit in the ground and get providing data.
Bob N5BRG
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