Cherry Theobroma PX30-mQ7 User Manual page 36

if [ ! -d /sys/class/gpio/gpio$GPIO_BOOT
echo $GPIO_BOOT
fi
if [ ! -d /sys/class/gpio/gpio$GPIO_EN
echo $GPIO_EN > /sys/class/gpio/export
fi
echo out > /sys/class/gpio/gpio$GPIO_BOOT/direction
echo out > /sys/class/gpio/gpio$GPIO_EN/direction
echo 0 > /sys/class/gpio/gpio$GPIO_BOOT/value
echo 0 > /sys/class/gpio/gpio$GPIO_EN/value
sleep 1
echo 1 > /sys/class/gpio/gpio$GPIO_EN/value
sleep 1
ESPTOOL=$(PATH=/root/.local/bin/:$PATH
$ESPTOOL -p /dev/ttyS3 -b
--chip esp32 write_flash --flash_mode dio --flash_size detect --flash_freq 40m
0x1000 /tmp/bootloader.bin
0x8000 /tmp/partition-table.bin
0x10000 /tmp/eagle.bin
sleep 1
echo 1 > /sys/class/gpio/gpio$GPIO_BOOT/value
echo 0 > /sys/class/gpio/gpio$GPIO_EN/value
sleep 1
echo 1 > /sys/class/gpio/gpio$GPIO_EN/value
echo $GPIO_BOOT > /sys/class/gpio/unexport
echo $GPIO_EN > /sys/class/gpio/unexport
echo sdio-pwrseq > /sys/bus/platform/drivers/pwrseq_simple/bind
echo ff380000.mmc > /sys/bus/platform/drivers/dwmmc_rockchip/bind
Note: On Debian, the esptool package provided by the package feed is too old. Instead, please install esptool software
from pip:
apt-get -y install python3-pip
pip3 install --user esptool
Note: By default, esptool is not available in our Yocto core-image-minimal image.
v1.2.0-1-g5ccabb6
Page 32
]; then
> /sys/class/gpio/export
]; then
which esptool.py)
460800 --before default_reset --after hard_reset
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