Question : Cannot Build pack.bin in OpenWRT Answer. Maybe the compilation environment does not have jq installed. Install jq package sudo apt install jq Due to the need to clear TF-A, Optee-OS and U-boot when changing the configuration make package/boot/arm-trusted-firmware-ma35d1/clean make packag...

Question : UART maximum baud rate support Answer. According to the manual, the maximum baud rate can support 9.5MHz Using non-os code to perform internal loop back testing can achieve the values described by TRM . In Linux, our test situation is that the FIFO trigger level is set to 0x30, and the b...

Question :

Understand IMAGE_INSTALL Library in Yocto Build System


Answer.
The VDDIO description is described in the TRM manual: #MA35D1, #VDDIO
.

Question : Support SmartCard Answer. The linux Kernel does not support smart cards. Only MA35D1 Non-OS and RTP M4 support smart card. For example, if the current customer uses the Linux system, the Smart card function can only be run on the RTP. The control, data, or status of the swiped card can b...

Question : RTLINUX Test Program : After adding the RTLINUX patch under openwrt When running stress-ng for stress testing, it was found that the CPU of rtlinux firmware can reach 50%, and non-rtlinux firmware can reach 100%. The running command is stress-ng -c 2 --cpu-method pi. I would like to know...

Question : IoT Board Modify Reserved-Memory Answer. Because the IoT Board does not use display-related content, you can remove the display-related content in the device tree and add reserved-memory. Currently, the reserved-memory of 128M is 19980k , and the reserved-memory of 512M is 117404K . Dele...

Question : How to Enter Sleep-mode ? Answer. Please refer to section 3.1.6 " Power Management " in the document UM_EN_MA35D1_Linux_BSP.pdf. Power management.png The relevant code can be found in the TFA (Trusted Firmware-A) file ma35d1_pm.c located in the directory plat/nuvoton/ma35d1/. #MA35D1, #s...

Question : Use aarch64-openwrt-linux-gcc to compile AP code in openwrt. Error: function is not implemented . Answer. Go to Github to grab the latest OpenWRT for testing. The operation process is as follows: The usage is similar to Buildroot, the steps are as follows: 1. Enter to “$TOPDIR/staging_di...

Question : Add GPIO-Line-Name Answer. Assuming that GPIO0~GPIO7 are named " test0...test7 " respectively, they need to be configured in ma35d1.dtsi. The relevant configuration is as follows: gpioa: gpioa@40040000 { reg = <0x0 0x40040000 0 0x40>, <0x0 0x40040800 0 0x40>; interrupts = <GIC_SPI 14 IRQ...

Question : Using the MA35 M4 development platform, the same code compiles to a bin file of 90kb. However, after compiling with nueclipse, the file size exceeds 1mb. How can I configure the compilation options to reduce the size after compiling? Answer. You can use the following commands to reduce t...