1.7 KiB
1.7 KiB
Debugging
mspdebug rf2500 gdb
msp430-gdb -x firmware.gdb
Attention: the gdb in the TI toolchain package is broken, use the one from Debian
Signals Working Cycler
These signals are related to code under tag cycler_works_include_output_stage.
First octets:
Last octets:
Schematics and legend for signals:
Timing
Complete cycle: 2.48us
Short pulse: 550ns
Long pulse: 1.18us
Load Time
During of loading data into five LEDs: 297us
During of loading data into six LEDs: 297us
| # of LEDs | Load Time measured | calculated |
|---|---|---|
| 5 | 297us | |
| 6 | 354us | 356.4us |
| 10 | 594us | |
| 100 | 5.9ms | |
| 200 | 11.8ms |
Reset Circuitry
It appears that the output voltage of the power supply raises that slow, that the MCU will not handle the reset correctly.
The following circuitry should generate a valid reset signal far enough from the raise of the supply voltage:
The circuit generates the following signals:
Reference voltage (green):
3.3V \frac{22k\Omega}{22k\Omega + 10k\Omega} = 2.2V
Trigger voltage (purple):
3.3V \frac{330k\Omega}{330k\Omega + 82k\Omega} = 2.64V
RC constant:
\tau = 82k\Omega 100nF = 8.2ms