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comparison target-utils/lunadrv/sleep.c @ 849:a66095c7f35f

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lunadrv: add suspend and resume commands
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 18 Aug 2021 04:00:14 +0000
parents
children 57f7db8c4f45
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848:6c306705f503 849:a66095c7f35f
1 /*
2 * This module implements suspend and resume commands for entering
3 * and exiting ILI9225G sleep mode. These commands are expected
4 * to work the same on both HaoRan and Formike LCDs, but the
5 * current measurement resistor that allows one to see the actual
6 * power supply current drawn by the LCD is present only on lunalcd2
7 * boards.
8 */
9
10 #include "types.h"
11 #include "luna.h"
12
13 void
14 cmd_suspend()
15 {
16 LCD_REG_WR(0x0007, 0); /* display off */
17 wait_ARM_cycles(DELAY_1MS * 50);
18 LCD_REG_WR(0x0010, 1); /* suspend mode */
19 }
20
21 void
22 cmd_resume()
23 {
24 LCD_REG_WR(0x0010, 0); /* out of suspend */
25 wait_ARM_cycles(DELAY_1MS * 50);
26 LCD_REG_WR(0x0007, 0x1017); /* display on */
27 }