FreeCalypso > hg > freecalypso-schem2
view venus/src/core/RF3166.v @ 70:8bc2aa52fd23
manual RESET button new part: 260 g force, shorter actuator
One of the main envisioned use cases for FC Venus is field demonstration:
the board will be carried around, mounted on a sheet of acrylic or somesuch,
it will have a battery and an antenna connected, there will be a test SIM
with active service inserted, and the setup will be ready to demonstrate
as a working phone at a moment's notice. But when a demo is not actively
in progress, the fully assembled setup will be transported around in a big
and loose ESD bag, and it will need to be equivalent to a traditional phone
in its switched-off state: battery present, RTC keeping time, but not
switched on all the time.
Having a RESET button of the same keyswitch type as used for the regular
keypad and PWON would cause a problem for such field transport scenarios:
any spurious press of this button would cause a "misc boot" switch-on.
Short spurious presses of PWON are filtered out by the firmware (automatic
power-off if the button isn't held down long enough), but the same cannot
be done for super-low-level nTESTRESET. However, a button with significantly
greater operating force and a shorter actuator (not sticking out to the same
height as the regular keypad buttons) should be much safer.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Thu, 02 Dec 2021 22:40:39 +0000 |
parents | 3ed0f7a9c489 |
children |
line wrap: on
line source
module RF3166 (HB_RF_in, Band_Select, Tx_Enable, Vbatt, GND, Vramp, LB_RF_in, LB_RF_out, HB_RF_out); input LB_RF_in, HB_RF_in; input Band_Select, Tx_Enable; input GND, Vbatt, Vramp; output LB_RF_out, HB_RF_out; /* instantiate the package; the mapping of signals to pins is defined here */ pkg_RF3166 pkg (.pin_1(HB_RF_in), .pin_2(Band_Select), .pin_3(Tx_Enable), .pin_4(Vbatt), .pin_5(GND), .pin_6(Vramp), .pin_7(LB_RF_in), .pin_8(LB_RF_out), .pin_9(HB_RF_out), .pin_10(GND), .pin_11(GND), .pin_12(GND), .pin_13(GND), .pin_14(GND), .pin_15(GND), .pin_16(GND), .pin_17(GND), .pin_18(GND), .pin_19(GND), .pin_20(GND), .pin_21(GND), .pin_22(GND), .pin_23(GND), .pin_24(GND), .pin_25(GND), .pin_26(GND), .pin_27(GND), .pin_28(GND), .pin_29(GND), .pin_30(GND), .pin_31(GND) ); endmodule