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346 discussions

SIMtrace v0.8
by Kevin Redon 12 May '11

12 May '11

hi, here v0.8 : https://gsm.tsaitgaist.info/SIMtrace/v0.8/ Compared to v0.7+, I added 2 1n4148 after the parallel voltage regulator outputs. I wanted to avoid the regulators to fuzz each other, but I don't know if it's right. Maybe an additional zener diode is also required. Now I'm looking for the parts and footprints. Kevin

3 6

packet-gsm_sim wireshark
by K2 10 May '11

10 May '11

It is assumed in the dissector that the TERMINAL PROFILE has a len of 17, which is not the case with the SIM i'm currently using. I fixed it replacing with: case 0x10: /* TERMINAL PROFILE */ offset += DATA_OFFS; if(p3 >= 1) proto_tree_add_bitmask(tree, tvb, offset++, hf_tprof_b1, ett_tprof_b1, tprof_b1_fields, FALSE); if(p3 >= 2) proto_tree_add_bitmask(tree, tvb, offset++, hf_tprof_b2, ett_tprof_b2, tprof_b2_fields, FALSE); if(p3 >= 3) proto_tree_add_bitmask(tree, tvb, offset++, hf_tprof_b3, ett_tprof_b3, tprof_b3_fields, FALSE); if(p3 >= 4) proto_tree_add_bitmask(tree, tvb, offset++, hf_tprof_b4, ett_tprof_b4, tprof_b4_fields, FALSE); if(p3 >= 5) proto_tree_add_bitmask(tree, tvb, offset++, hf_tprof_b5, ett_tprof_b5, tprof_b5_fields, FALSE); if(p3 >= 6) proto_tree_add_bitmask(tree, tvb, offset++, hf_tprof_b6, ett_tprof_b6, tprof_b6_fields, FALSE); if(p3 >= 7) proto_tree_add_bitmask(tree, tvb, offset++, hf_tprof_b7, ett_tprof_b7, tprof_b7_fields, FALSE); if(p3 >= 8) proto_tree_add_bitmask(tree, tvb, offset++, hf_tprof_b8, ett_tprof_b8, tprof_b8_fields, FALSE); if(p3 >= 9) proto_tree_add_bitmask(tree, tvb, offset++, hf_tprof_b9, ett_tprof_b9, tprof_b9_fields, FALSE); if(p3 >= 10) proto_tree_add_bitmask(tree, tvb, offset++, hf_tprof_b10, ett_tprof_b10, tprof_b10_fields, FALSE); if(p3 >= 11) proto_tree_add_bitmask(tree, tvb, offset++, hf_tprof_b11, ett_tprof_b11, tprof_b11_fields, FALSE); if(p3 >= 12) proto_tree_add_bitmask(tree, tvb, offset++, hf_tprof_b12, ett_tprof_b12, tprof_b12_fields, FALSE); if(p3 >= 13) proto_tree_add_bitmask(tree, tvb, offset++, hf_tprof_b13, ett_tprof_b13, tprof_b13_fields, FALSE); if(p3 >= 14) proto_tree_add_bitmask(tree, tvb, offset++, hf_tprof_b14, ett_tprof_b14, tprof_b14_fields, FALSE); if(p3 >= 15) proto_tree_add_bitmask(tree, tvb, offset++, hf_tprof_b15, ett_tprof_b15, tprof_b15_fields, FALSE); if(p3 >= 16) proto_tree_add_bitmask(tree, tvb, offset++, hf_tprof_b16, ett_tprof_b16, tprof_b16_fields, FALSE); if(p3 >= 17) proto_tree_add_bitmask(tree, tvb, offset++, hf_tprof_b17, ett_tprof_b17, tprof_b17_fields, FALSE); /* FIXME */ break;

2 1

SIMtrace v0.7
by Kevin Redon 09 May '11

09 May '11

Hi The corrections have been applied. I hope I did not forget anything. The main changes : - reset is a jumper - bootloader switch added - 100k resistors used (instead of 4.7k, I hope it does not break anything) - jack connector added (for the debug) - WP from flash connected - USB voltage regulator TPS73633 used (lower capacitance) - USB buffer used instead of the openPCB solution (thus no pull-up and reset connection). saves space and complexity - pin renamed - QS3244 instead of QS3245 used, I/O and other pins are controlled separately - ... To make the changes I used the AT91SAM7X-EK Evaluation Board User Guide. The overall capacitance is reduced, but I think the 22uF for the battery should be kept. files : https://gsm.tsaitgaist.info/SIMtrace/v0.7/ good luck, Kevin

2 6

SIMtrace v0.6 schema
by Kevin Redon 08 May '11

08 May '11

Hi, here the schema. all the components are on it, but I don't know if the electrical part is right. Any comments/advices are welcome. schema : https://gsm.tsaitgaist.info/SIMtrace/v0.6/SIMtrace.ps source (KiCAD) : https://gsm.tsaitgaist.info/SIMtrace/v0.6/

3 4

Re: SPI flash
by Kevin Redon 06 May '11

06 May '11

Hi, I never tried WSON, but I think it's still possible to solder it. To do it (as most of the smd), I use a heating plate and a hot air gun (with soldering paste), and not a soldering iron. So it might also work with this package. But the SOIC package is easier for others. Even it's it two time the price, it's not too expensive. So you can choose any. Kevin On 06.05.2011 11:34, Harald Welte wrote: > Hi! > > I think one of the big concerns is to use components that can still be > soldered manually (like SOIC-8). All the larger-than-32MBit (4MByte) > SPI flashes that I could find were in smaller cases with no leads > extending from the case (like WSON). > > This one looks fine to me, and is available from digikey: > http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=SST25VF032… > datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/S71327_04.pdf > > Regards, > Harald >

1 0

None
by Luca Bongiorni 06 May '11

06 May '11

1 0

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