* [rtdef] rename RT_WEAK attribute as rt_weak * [rtdef] rename RT_USED attribute as rt_used * [rtdef] rename RT_SECTION attribute as rt_section * [rtdef] rename ALIGN attribute as rt_align * [legacy] add RT_USED ALIGN RT_SECTION RT_WEAK as legacy support
* [console] fix bug of sdram, configure PA7(DRAM_WE) * [bsp/stm32] add qspi flash for openmv * [bsp/stm32] change sram1 to sram2 * [bsp/stm32] add sdio for openmv * [update] update README.md of openmv