embedded-systems

task issue as follow

• combine IDF and scons --targe=cmake build system
• porting drv_gpio.c with cmake system
• porting drv_uart.c with cmake system
• porting drv_iic.c with cmake system
• porting drv_spi.c with cmake system
• porting drv_pwm.c with cmake system

defmt

defmt::println!("{:?}", 1 as *const u8);

output:

 1
└─ hello::__cortex_m_rt_main @ src/bin/hello.rs:8

core::fmt

println!("{:?}", 1 as *const u8);

output:

0x1

defmt should also include the 0x prefix.

The current format makes it hard to tell that the number is a hexadecimal valu