microbit: A sample program using yotta
This commit adds the bbc-microbit-armcc target, and also includes the microbit dal, showing how the microbit can be compiled using yotta.master
James Devine
commit
c5c2cfb221
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build
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yotta_modules
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yotta_targets/*
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!.gitignore
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!yotta_targets/bbc-microbit-armcc
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{
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"build": {
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"target": "bbc-microbit-armcc,*"
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}
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}
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{
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"name": "microbit",
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"version": "0.0.1",
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"description": "The micro:bit runtime, building with yotta",
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"licenses": [
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{
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"url": "https://spdx.org/licenses/Apache-2.0",
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"type": "Apache-2.0"
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}
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],
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"dependencies": {
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"mbed-classic": "~0.0.4",
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"ble": "jamesadevine/BLE_API",
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"ble-nrf51822": "jamesadevine/nrf51822",
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"microbit-dal":"jamesadevine/microbit-dal"
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},
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"targetDependencies": {},
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"bin": "./source"
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}
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/* mbed Microcontroller Library
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* Copyright (c) 2006-2015 ARM Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "MicroBit.h"
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DigitalOut led1(LED1);
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void periodicCallback(void)
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{
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/* Do blinky on LED1 while we're waiting for BLE events */
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}
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void app_main()
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{
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led1 = 1;
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// infinite loop
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while (1)
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{
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uBit.display.scrollString("ABC123");
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uBit.sleep(1000);
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}
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}
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build
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yotta_targets
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yotta_modules
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upload.tar.gz
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.DS_Store
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.yotta.json
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# Copyright (C) 2014-2015 ARM Limited. All rights reserved.
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if(TARGET_NORDIC_NRF51822_16K_ARMCC_TOOLCHAIN_INCLUDED)
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return()
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endif()
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set(TARGET_NORDIC_NRF51822_16K_ARMCC_TOOLCHAIN_INCLUDED 1)
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# legacy definitions for building mbed 2.0 modules with a retrofitted build
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# system:
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set(MBED_LEGACY_TARGET_DEFINITIONS "NORDIC" "NRF51_MICROBIT" "MCU_NRF51822" "MCU_NRF51_16K" "MCU_NORDIC_16K" "MCU_NRF51_16K_S110")
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# provide compatibility definitions for compiling with this target: these are
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# definitions that legacy code assumes will be defined.
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add_definitions("-DNRF51 -DTARGET_NORDIC -DTARGET_M0 -D__MBED__=1 -DMCU_NORDIC_16K -DTARGET_NRF51_MICROBIT -DTARGET_MCU_NORDIC_16K -DTARGET_MCU_NRF51_16K_S110 -DTARGET_NRF_LFCLK_RC -DTARGET_MCU_NORDIC_16K -D__CORTEX_M0 -DARM_MATH_CM0")
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# append non-generic flags, and set NRF51822-specific link script
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set(_CPU_COMPILATION_OPTIONS "--CPU=Cortex-M0 -D__thumb2__")
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set(CMAKE_C_FLAGS_INIT "${CMAKE_C_FLAGS_INIT} ${_CPU_COMPILATION_OPTIONS}")
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set(CMAKE_ASM_FLAGS_INIT "${CMAKE_ASM_FLAGS_INIT} ${_CPU_COMPILATION_OPTIONS}")
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set(CMAKE_CXX_FLAGS_INIT "${CMAKE_CXX_FLAGS_INIT} ${_CPU_COMPILATION_OPTIONS}")
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#set(CMAKE_MODULE_LINKER_FLAGS_INIT "${CMAKE_MODULE_LINKER_FLAGS_INIT}")
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set(CMAKE_EXE_LINKER_FLAGS_INIT "${CMAKE_EXE_LINKER_FLAGS_INIT} --info=totals --list=.link_totals.txt --scatter ${CMAKE_CURRENT_LIST_DIR}/../ld/nRF51822.sct")
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# used by the apply_target_rules function below:
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set(NRF51822_SOFTDEVICE_HEX_FILE "${CMAKE_CURRENT_LIST_DIR}/../softdevice/s110_nrf51822_8.0.0_softdevice.hex")
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# define a function for yotta to apply target-specific rules to build products,
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# in our case we need to convert the built elf file to .hex, and add the
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# pre-built softdevice:
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function(yotta_apply_target_rules target_type target_name)
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if(${target_type} STREQUAL "EXECUTABLE")
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# !!! FIXME: is there an armcc toolchain command that can be used to
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# do this? (instead of needing binutils' objcopy)
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add_custom_command(TARGET ${target_name}
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POST_BUILD
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COMMAND arm-none-eabi-size ${target_name}
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# fromelf to hex
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COMMAND fromelf --i32combined --output=${target_name}.hex ${target_name}
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# and append the softdevice hex file
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COMMAND srec_cat ${NRF51822_SOFTDEVICE_HEX_FILE} -intel ${target_name}.hex -intel -o ${target_name}-combined.hex -intel --line-length=44
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COMMAND srec_info ${target_name}-combined.hex -intel
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COMMENT "hexifying and adding softdevice to ${target_name}"
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VERBATIM
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)
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endif()
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endfunction()
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;WITHOUT SOFTDEVICE:
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;LR_IROM1 0x00000000 0x00040000 {
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; ER_IROM1 0x00000000 0x00040000 {
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; *.o (RESET, +First)
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; *(InRoot$$Sections)
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; .ANY (+RO)
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; }
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; RW_IRAM1 0x20000000 0x00004000 {
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; .ANY (+RW +ZI)
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; }
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;}
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;
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;WITH SOFTDEVICE:
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LR_IROM1 0x18000 0x0028000 {
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ER_IROM1 0x18000 0x0028000 {
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*.o (RESET, +First)
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*(InRoot$$Sections)
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.ANY (+RO)
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}
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RW_IRAM1 0x20002000 0x00002000 {
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.ANY (+RW +ZI)
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}
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}
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## yotta Target Description using ARMCC to compile for Nordic nRF51822 16KB device.
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File diff suppressed because it is too large
Load Diff
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@ -0,0 +1,46 @@
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{
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"name": "bbc-microbit-armcc",
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"version": "0.0.1",
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"description": "Official mbed build target for the microbit, using the armcc toolchain.",
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"licenses": [
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{
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"url": "https://spdx.org/licenses/Apache-2.0",
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"type": "Apache-2.0"
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}
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],
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"inherits": {
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"mbed-armcc": "*"
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},
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"keywords": [
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"mbed-target:nrf51822",
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"mbed-official",
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"nrf51822",
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"nordic",
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"armcc",
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"microbit"
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],
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"config": {},
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"similarTo": [
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"nrf51822",
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"nrf",
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"nordic",
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"cortex-m0",
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"armv6-m",
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"mbed-classic"
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],
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"toolchain": "CMake/toolchain.cmake",
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"scripts": {
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"debug": [
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"valinor",
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"--target",
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"NRF51_MICROBIT",
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"$program"
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],
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"test": [
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"mbed_test_wrapper",
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"--target",
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"NRF51_MICROBIT",
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"$program"
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]
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}
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}
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