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| Agilent E7495 linux root account |
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| kirill_ka:
--- Quote from: ncfireman on August 02, 2018, 01:58:52 am ---Has anyone had any luck using either the serial ports or gpio? I was hoping to get it to spit out useful data on the serial port. --- End quote --- There should be no problem accessing serial port from inside of E7495. What kind of data are you going to spit out? |
| ncfireman:
I'd like to be able to export gps and an average signal level. Something where I could do a rough drive test. |
| 9aplus:
Today during the boot my E7495B stopped to work. The unit was couple months in storage during the whole summer. The trouble is localized within PS DC/DC picture with model details in attachment. Looking for that module, designated in service manual like: Power supply interface board A4A4 or whole unit E7495 for parts.... PM pls, located within EU |
| kirill_ka:
--- Quote from: 9aplus on November 22, 2018, 06:52:28 pm ---The trouble is localized within PS DC/DC picture with model details in attachment. --- End quote --- My E7495A refused to work on battery. Now I regret that I dig into this. It took so much time... The issue that was looking like a component failure appeared to be a pure software thing. There is some SMBUS/Smart battery ugliness. Anyway, now I know quite a lot about this module. I can help with diagnostics and repair. |
| kirill_ka:
Here's PIC16F877 pin map to start with. It's not complete and may have some mistakes, but it's at least something. --- Code: ---P/N NAME DIR FUNCTION CONNECTIONS 1 RC7 I UART RX J10/5 2 RD4 O BATT LED U10 3 RD5 O BATT LED U10 4 RD6 O BATT LED U10 5 RD7 O BATT LED U10 6 VSS - 7 VDD + 8 RB0 I LOBAT(LOW) 9 RB1 O 3DM(LOW) 10 RB2 O DCIN (HI) 11 RB3 O PWR ON LED J20/10 12 NC x 13 NC x 14 RB4 I START OF BATTERY MONITORING? J52/4, R96 15 RB5 O BATDIS(LOW) 16 RB6 O SUSPEND to ADS? J6/1, J55/2 17 RB7 O STBY PWR ON (LOW), STDBY LED (LOW) U101, U11 - J20/7 18 RST R 19 RA0 A BATT TEMP 20 RA1 A BATT TEMP 21 RA2 O BATT TEMP STROBE 22 RA3 I CONFIG JUMPER J11/1 23 RA4 I DCIN DETECT U1 24 RA5 O BATT TEMP STROBE 25 RE0 A 3.3V SENSE 100K - J5/5,6 26 RE1 I PWR SW U203, J20/9 27 RE2 I ADS POWER DETECT 28 VDD + 29 VSS - 30 X1 C 4MHz clock in U100 31 X2 I NOT USED 32 RC0 O CHARGER OFF 100K - CR4, Q13 - Q12 - U8/2 33 NC x 34 NC x 35 RC1 O adjusts PROG A of U7 Q11 - 10K - U7/1 36 RC2 O charger output voltage setting Q14 - ?K - U8/6(Vosense) 37 RC3 I/O SCL Q20, J52/3 38 RD0 O CHGSEL 39 RD1 I BACKLIGHT DISABLE? (NOT USED) 100K to Q7, GND 40 RD2 O BATSEL 41 RD3 O MAIN POWER ON 18K to J5/10 42 RC4 I/O SDA Q16, J52/2 43 RC5 O I2C BATT MULTIPLEX U13 44 RC6 O UART TX J10/3 Q16, Q19, Q7 = NPN MMBT3904 1AM B C E PNP MMB3906 2A B C E n-MOS 2N7002 702P G D S --- End code --- |
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