Francesco Masciari
A test for vescs
Diff: README.md
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/README.md Thu Dec 06 14:43:47 2018 +0000 @@ -0,0 +1,164 @@ +# Getting started example for Mbed OS + +This guide reviews the steps required to get Blinky with the addition of dynamic OS statistics working on an Mbed OS platform. + +Please install [mbed CLI](https://github.com/ARMmbed/mbed-cli#installing-mbed-cli). + +## Import the example application + +From the command-line, import the example: + +``` +mbed import mbed-os-example-blinky +cd mbed-os-example-blinky +``` + +### Now compile + +Invoke `mbed compile`, and specify the name of your platform and your favorite toolchain (`GCC_ARM`, `ARM`, `IAR`). For example, for the ARM Compiler 5: + +``` +mbed compile -m K64F -t ARM +``` + +Your PC may take a few minutes to compile your code. At the end, you see the following result: + +``` +[snip] ++----------------------------+-------+-------+------+ +| Module | .text | .data | .bss | +|--------------------|-----------|----------|----------| +| [fill] | 98(+0) | 0(+0) | 2211(+0) | +| [lib]/c.a | 27835(+0) | 2472(+0) | 89(+0) | +| [lib]/gcc.a | 3168(+0) | 0(+0) | 0(+0) | +| [lib]/misc | 248(+0) | 8(+0) | 28(+0) | +| [lib]/nosys.a | 32(+0) | 0(+0) | 0(+0) | +| main.o | 924(+0) | 0(+0) | 12(+0) | +| mbed-os/components | 134(+0) | 0(+0) | 0(+0) | +| mbed-os/drivers | 56(+0) | 0(+0) | 0(+0) | +| mbed-os/features | 42(+0) | 0(+0) | 184(+0) | +| mbed-os/hal | 2087(+0) | 8(+0) | 152(+0) | +| mbed-os/platform | 3633(+0) | 260(+0) | 209(+0) | +| mbed-os/rtos | 9370(+0) | 168(+0) | 6053(+0) | +| mbed-os/targets | 9536(+0) | 12(+0) | 382(+0) | +| Subtotals | 57163(+0) | 2928(+0) | 9320(+0) | +Total Static RAM memory (data + bss): 12248(+0) bytes +Total Flash memory (text + data): 60091(+0) bytes + +Image: ./BUILD/K64F/GCC_ARM/mbed-os-example-blinky.bin +``` + +### Program your board + +1. Connect your mbed device to the computer over USB. +1. Copy the binary file to the mbed device. +1. Press the reset button to start the program. + +The LED on your platform turns on and off. The main thread will additionally take a snapshot of the device's runtime statistics and display it over serial to your PC. The snapshot includes: + +* System Information: + * Mbed OS Version: Will currently default to 999999 + * Compiler ID + * ARM = 1 + * GCC_ARM = 2 + * IAR = 3 + * [CPUID Register Information](#cpuid-register-information) + * [Compiler Version](#compiler-version) +* CPU Statistics + * Percentage of runtime that the device has spent awake versus in sleep +* Heap Statistics + * Current heap size + * Max heap size which refers to the largest the heap has grown to +* Thread Statistics + * Provides information on all running threads in the OS including + * Thread ID + * Thread Name + * Thread State + * Thread Priority + * Thread Stack Size + * Thread Stack Space + +#### Compiler Version + +| Compiler | Version Layout | +| -------- | -------------- | +| ARM | PVVbbbb (P = Major; VV = Minor; bbbb = build number) | +| GCC | VVRRPP (VV = Version; RR = Revision; PP = Patch) | +| IAR | VRRRPPP (V = Version; RRR = Revision; PPP = Patch) | + +#### CPUID Register Information + +| Bit Field | Field Description | Values | +| --------- | ----------------- | ------ | +|[31:24] | Implementer | 0x41 = ARM | +|[23:20] | Variant | Major revision 0x0 = Revision 0 | +|[19:16] | Architecture | 0xC = Baseline Architecture | +| | | 0xF = Constant (Mainline Architecture) | +|[15:4] | Part Number | 0xC20 = Cortex-M0 | +| | | 0xC60 = Cortex-M0+ | +| | | 0xC23 = Cortex-M3 | +| | | 0xC24 = Cortex-M4 | +| | | 0xC27 = Cortex-M7 | +| | | 0xD20 = Cortex-M23 | +| | | 0xD21 = Cortex-M33 | +|[3:0] | Revision | Minor revision: 0x1 = Patch 1 | + + + +You can view individual examples and additional API information of the statistics collection tools at the bottom of the page in the [related links section](#related-links). + + +### Output + +To view the serial output you can use any terminal client of your choosing such as [PuTTY](http://www.putty.org/) or [CoolTerm](http://freeware.the-meiers.org/). + +The default baud rate for this application is set to `115200` and may be modified in the `mbed_app.json` file. + +You can find more information on the Mbed OS configuration tools and serail communication in Mbed OS in the related [related links section](#related-links). + +The output should contain the following block transmitted at the blinking LED frequency (actual values may vary depending on your target, build profile, and toolchain): + +``` +=============================== SYSTEM INFO ================================ +Mbed OS Version: 999999 +CPU ID: 0x410fc241 +Compiler ID: 2 +Compiler Version: 60300 +================= CPU STATS ================= +Idle: 98% Usage: 2% +================ HEAP STATS ================= +Current heap: 1096 +Max heap size: 1096 +================ THREAD STATS =============== +ID: 0x20001eac +Name: main_thread +State: 2 +Priority: 24 +Stack Size: 4096 +Stack Space: 3296 + +ID: 0x20000f5c +Name: idle_thread +State: 1 +Priority: 1 +Stack Size: 512 +Stack Space: 352 + +ID: 0x20000f18 +Name: timer_thread +State: 3 +Priority: 40 +Stack Size: 768 +Stack Space: 664 + +``` + +## Troubleshooting + +If you have problems, you can review the [documentation](https://os.mbed.com/docs/latest/tutorials/debugging.html) for suggestions on what could be wrong and how to fix it. + +## Related Links + +* [Mbed OS Stats API](https://os.mbed.com/docs/latest/apis/mbed-statistics.html) +* [Mbed OS Configuration](https://os.mbed.com/docs/latest/reference/configuration.html) +* [Mbed OS Serial Communication](https://os.mbed.com/docs/latest/tutorials/serial-communication.html)