7a530c404d
Olimex stm32-h407 serial support for the on-board UEXT connector (fixed style & defconfig) * olimex-stm32-h407: Add USART6 for UEXT connector. * olimex-stm32-h407: nsh_uext configuration and README update. Approved-by: Gregory Nutt <gnutt@nuttx.org> |
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README.txt |
README ====== The Olimex STM32-H407 configuration is based on stm32Fdiscovery and Olimex STM32-H405. The H407 was programmed with ST-LINK/V2 from both Win8.1 and Ubuntu 14.04 This release provides baseline for H407 12MHZ clock in include/board.h nsh - Only basic shell response tested on USART2 nsh_uext - Basic shell response tested on USART6 (UEXT) Development Environment ======================= Either Linux or Cygwin on Windows can be used for the development environment. The source has been built only using the GNU toolchain (see below). Other toolchains will likely cause problems. LEDs ==== The H407 board has 1 Status LED; SDCard ====== Expects to be plugged in else hangs. TODO: Shouldn't hang. SDIO 4bit with pulls/downs on pins. Doesn't have a SD card detect pin. UARTs ===== On the H407 board, ?? all uarts are available for pin mappings USART2 can be used for nsh console like on Discovery board, or you can use USART6 exposed via UEXT connector. Olimex offers MOD-RS232 voltage level convertor for the UEXT so it can be attached to computer serial port. STM32-H407-specific Configuration Options ===============================================