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echoplayer: implement basic power-on / power-off logic

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Use cpu_power_on as a GPIO to keep the main power supply
enabled when running from battery.

Change-Id: Ic79283a0cc640585a0297e11f9dcc2264ec9af26
This commit is contained in:
Aidan MacDonald 2026-01-12 16:07:55 +00:00 • committed by Solomon Peachy
parent e29780fe09
commit 671320b5d1
4 changed files with 24 additions and 1 deletions
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4
bootloader/echoplayer.c
View file

@ -119,6 +119,10 @@ void main(void)
demo_page -= 1;
break;
case BUTTON_X:
power_off();
break;
default:
break;
}

14
firmware/target/arm/stm32/echoplayer/power-echoplayer.c
View file

@ -67,10 +67,24 @@ void power_init(void)
void power_off(void)
{
gpio_set_level(GPIO_CPU_POWER_ON, 0);
/* TODO: reset to bootloader if USB is plugged in */
while (1)
core_idle();
}
void system_reboot(void)
{
/*
* TODO: support reboot
*
* For R1-Rev1 PCBs doing a CPU reset will cut power when
* running on battery (because cpu_power_on is no longer
* being driven high). The RTC alarm could be used to wake
* the system instead.
*/
power_off();
}
unsigned int power_input_status(void)

2
firmware/target/arm/stm32/echoplayer/system-echoplayer.c
View file

@ -56,7 +56,7 @@ static const struct gpio_setting gpios[] = {
STM_DEFGPIO(GPIO_BUTTON_VOL_DOWN, F_INPUT_PU),
STM_DEFGPIO(GPIO_BUTTON_POWER, F_INPUT_PD),
STM_DEFGPIO(GPIO_BUTTON_HOLD, F_INPUT_PU),
STM_DEFGPIO(GPIO_CPU_POWER_ON, F_LPTIM4_OUT),
STM_DEFGPIO(GPIO_CPU_POWER_ON, F_OUT_LS(1)), /* active high */
STM_DEFGPIO(GPIO_POWER_1V8, F_OUT_LS(0)), /* active high */
STM_DEFGPIO(GPIO_CODEC_AVDD_EN, F_OUT_LS(1)), /* active low */
STM_DEFGPIO(GPIO_CODEC_DVDD_EN, F_OUT_LS(1)), /* active low */

5
firmware/target/arm/stm32/system-stm32h7.c
View file

@ -20,6 +20,7 @@
****************************************************************************/
#include "system.h"
#include "tick.h"
#include "button.h"
#include "clock-stm32h7.h"
#include "gpio-stm32h7.h"
#include "regs/cortex-m/cm_scb.h"
@ -154,7 +155,11 @@ void mdelay(uint32_t ms)
void system_exception_wait(void)
{
#if defined(ECHO_R1)
while (button_read_device() != (BUTTON_POWER | BUTTON_START));
#else
while (1);
#endif
}
int system_memory_guard(int newmode)