74cd8a53d5
Author: Gregory Nutt <gnutt@nuttx.org>
A few trivial updates from review of changes.
Remove references to NRF52-PCA10040 from documentation. Replace with NRF52-generic.
Remove configs/nrf52-pca10040/ Replaced with configs/nrf52-generic.
Author: Zou Hanya <hanyazou@gmail.com>
Improve LED handling #if~#endif in nrf52_autoleds.c and nrf52_userleds.c
Add Adafruit Feather nRF52 board LED support
Add Adafruit Feather nRF52 board
Add nrf52-generic
Replace 'pca10040' with 'generic'
Copy from nrf52-pca10040 to nrf52-generic
136 lines
3.1 KiB
Plaintext
136 lines
3.1 KiB
Plaintext
README
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======
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README for NuttX port to generic NRF52832 boards.
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Contents
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========
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- Status
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- PCA10040 development board
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- Configurations
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Status
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======
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This is the current status of the NRF52 port:
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- The basic OS test configuration and the basic NSH configurations
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are present and fully verified. This includes: SYSTICK system time,
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pin and GPIO configuration, and serial console support.
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PCA10040 board
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==============
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Console
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-------
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The PCA10040 default console is the UART0.
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The PCA10040 does not have RS-232 drivers or serial connectors on board.
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UART0, is available on P4 as follows:
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-------- -----
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Signal PIN
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-------- -----
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UART0-TX P0.24
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UART0-RX P0.23
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LEDs
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----
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The PCA10040 has 4 user-controllable LEDs
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LED MCU
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LED1 PIN-17
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LED2 PIN-18
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LED3 PIN-19
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LED4 PIN-20
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A low output illuminates the LED.
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Pushbuttons
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-----------
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To be provided
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Feather nRF52 board
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===================
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https://www.adafruit.com/product/3406
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Console
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-------
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The Feather nRF52 default console is the UART0.
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The Feather nRF52 have USB serial bridge chip on board and UART0 is
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connected to micro USB connector through the bridge chip.
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LEDs
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----
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The Feather has 2 user-controllable LEDs
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LED MCU
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LED1 PIN-17
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LED2 PIN-19
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A high output illuminates the LED.
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Pushbuttons
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-----------
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The Feather nRF52 does not have user-controllable buttons. The reset button
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on the board is connected to nRF52832 reset pin directly.
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Memory Map
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==========
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Block Start Length
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Name Address
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--------------------- ---------- ------
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FLASH 0x00000000 512K
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RAM 0x20000000 64K
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Configurations
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==============
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Each configuration is maintained in a sub-directory and can be selected as
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follow:
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tools/configure.sh nrf52-generic/<subdir>
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Where <subdir> is one of the following:
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<board>-nsh:
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-----------
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This configuration is the NuttShell (NSH) example at examples/nsh/.
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NOTES:
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1. This configuration uses the mconf-based configuration tool. To
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change this configurations using that tool, you should:
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a. Build and install the kconfig-mconf tool. See nuttx/README.txt
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see additional README.txt files in the NuttX tools repository.
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b. Execute 'make menuconfig' in nuttx/ in order to start the
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reconfiguration process.
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<board>-wdog:
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------------
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This configuration is a simple NSH-based test of the nRF52 watchdog
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timer driver using the test at apps/examples/watchdog.
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CONFIG_ARCH_LEDS
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----------------
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If CONFIG_ARCH_LEDS is defined, the LED will be controlled as follows
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for NuttX debug functionality (where NC means "No Change").
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TBD!
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If CONFIG_ARCH_LEDS is not defined, then the LEDs are completely under
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control of the application. The following interfaces are then available
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for application control of the LEDs:
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void board_userled_initialize(void);
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void board_userled(int led, bool ledon);
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void board_userled_all(uint8_t ledset);
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