FreeCalypso > hg > freecalypso-tools
view target-utils/lunadrv/sleep.c @ 995:74024eb17e04
fc-loadtool help: improve language regarding 16 MiB flash chips
In FC project history, 16 MiB flash originally meant Pirelli DP-L10.
Then we got FCDEV3B with the same flash (our own design), but now we are
discovering more Calypso devices that used such large flash, both late
Calypso era (Sony Ericsson K2x0) as well as much earlier ones (FIC FLUID
devices.txt file with 2004 dates, Leonardo+ rev 5). Hence we need to
migrate to more generic or neutral language in associated documentation,
without giving elevated status to specific examples that drove our
early project history.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sun, 03 Dec 2023 21:11:12 +0000 |
parents | 57f7db8c4f45 |
children |
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/* * This module implements suspend and resume commands for entering * and exiting ILI9225G sleep mode. These commands are expected * to work the same on both HaoRan and Formike LCDs, but the * current measurement resistor that allows one to see the actual * power supply current drawn by the LCD is present only on lunalcd2 * boards. */ #include "types.h" #include "luna.h" void cmd_suspend() { LCD_REG_WR(0x0007, 0); /* display off */ wait_ARM_cycles(DELAY_1MS * 50); LCD_REG_WR(0x0010, 1); /* suspend mode */ } void cmd_resume() { LCD_REG_WR(0x0010, 0); /* out of suspend */ wait_ARM_cycles(DELAY_1MS * 50); LCD_REG_WR(0x0007, 0x1017); /* display on */ } /* * If we wish to run sans-UI firmware on an LCD-equipped board, * we would like to put the ILI9225G controller into its lowest * power mode, without doing anything else to it. The following * reset-suspend command prototypes this functionality. */ void cmd_reset_suspend() { /* reset pulse */ CNTL_RST_REG |= EXT_RESET; wait_ARM_cycles(DELAY_1MS * 10); CNTL_RST_REG &= ~EXT_RESET; /* datasheet says it needs 50 ms */ wait_ARM_cycles(DELAY_1MS * 50); /* and straight into suspend mode */ LCD_REG_WR(0x0010, 1); }