digitalmars.D.learn - unusual bare metal target: Amazon Dash
- Laeeth Isharc (33/33) Aug 17 2015 I don't know whether D can run on one, but from a quick look
- Rikki Cattermole (12/42) Aug 17 2015 By what you are saying, I believe it should be doable.
- Laeeth Isharc (5/73) Aug 18 2015 I think its doable too. Nobody seems to have figured out the
- Rikki Cattermole (3/60) Aug 18 2015 I was thinking about that. Maybe for speech recognition? Of course there...
- Mike (7/14) Aug 20 2015 Yes, with the right techniques.
- Laeeth Isharc (8/23) Aug 20 2015 Thanks, Mike.
I don't know whether D can run on one, but from a quick look perhaps feasible. Running D on something like this (perhaps it's underpowered, but looked to have similar spec to what people had been doing with related ARM cortex processors) would certainly make the point very vivid that it can be a bare metal programming language. Only 1Mb of flash RAM for the program - is that enough? https://learn.adafruit.com/dash-hacking-bare-metal-stm32-programming/programming https://learn.adafruit.com/dash-hacking-bare-metal-stm32-programming/overview The Amazon Dash button is a tiny device that orders products from Amazon.com at the press of a button. It's designed to be put wherever you store consumeables like paper towels, trash bags, etc. so that you can easily order more when they run out. The Dash is great at what it's designed to do, but did you know inside the Dash is a powerful ARM Cortex-M3 processor and WiFi module that are very similar to wireless development boards like the Particle Photon? You'll even find there are easily accessible test pads on the Dash which allow you to reprogram its CPU and turn it into your own $5 internet button! This guide will explore how to take apart the Dash and reprogram its CPU to run your own code. ... The CPU is a STM32F205RG6 processor which is an ARM Cortex-M3 that can run up to 120mhz and has 128 kilobytes of RAM and 1 megabyte of flash memory for program storage. The WiFi module is a BCM943362 module which in combination with the CPU make it a platform for Broadcom's WICED SDK. There's a 16 megabit SPI flash ROM which is typically used in conjunction with the WICED SDK for storing application data. An ADMP441 microphone is connected to the CPU and used by the Dash iOS application to configure the device using the speaker on a phone/tablet. There's a single RGB LED and a button.
Aug 17 2015
On 18/08/2015 1:32 p.m., Laeeth Isharc wrote:I don't know whether D can run on one, but from a quick look perhaps feasible. Running D on something like this (perhaps it's underpowered, but looked to have similar spec to what people had been doing with related ARM cortex processors) would certainly make the point very vivid that it can be a bare metal programming language. Only 1Mb of flash RAM for the program - is that enough? https://learn.adafruit.com/dash-hacking-bare-metal-stm32-programming/programming https://learn.adafruit.com/dash-hacking-bare-metal-stm32-programming/overview The Amazon Dash button is a tiny device that orders products from Amazon.com at the press of a button. It's designed to be put wherever you store consumeables like paper towels, trash bags, etc. so that you can easily order more when they run out. The Dash is great at what it's designed to do, but did you know inside the Dash is a powerful ARM Cortex-M3 processor and WiFi module that are very similar to wireless development boards like the Particle Photon? You'll even find there are easily accessible test pads on the Dash which allow you to reprogram its CPU and turn it into your own $5 internet button! This guide will explore how to take apart the Dash and reprogram its CPU to run your own code. ... The CPU is a STM32F205RG6 processor which is an ARM Cortex-M3 that can run up to 120mhz and has 128 kilobytes of RAM and 1 megabyte of flash memory for program storage. The WiFi module is a BCM943362 module which in combination with the CPU make it a platform for Broadcom's WICED SDK. There's a 16 megabit SPI flash ROM which is typically used in conjunction with the WICED SDK for storing application data. An ADMP441 microphone is connected to the CPU and used by the Dash iOS application to configure the device using the speaker on a phone/tablet. There's a single RGB LED and a button.By what you are saying, I believe it should be doable. Although I'm a little worried for the WiFi support. Do you need to include the code to drive it beyond wrap up some communication to it? 1mb flash should be enough to run D code on it. If you strip out a good percentage of druntime and definitely no Phobos. Although you may be able to mark and use some of that 16mb flash rom as executable code storage. If that's so, you'll be in a good place to have more then 1mb. It would require some clever runtime linking tricks however. I'm probably not the best person to go more in depth about it or the specific chips. So I won't. Most of my knowledge comes from reading what others says and talking with Jens Bauer.
Aug 17 2015
On Tuesday, 18 August 2015 at 04:36:49 UTC, Rikki Cattermole wrote:On 18/08/2015 1:32 p.m., Laeeth Isharc wrote:I think its doable too. Nobody seems to have figured out the wifi yet - more at LED flashing stage. It's funny these wifi devices have microphones in them !I don't know whether D can run on one, but from a quick look perhaps feasible. Running D on something like this (perhaps it's underpowered, but looked to have similar spec to what people had been doing with related ARM cortex processors) would certainly make the point very vivid that it can be a bare metal programming language. Only 1Mb of flash RAM for the program - is that enough? https://learn.adafruit.com/dash-hacking-bare-metal-stm32-programming/programming https://learn.adafruit.com/dash-hacking-bare-metal-stm32-programming/overview The Amazon Dash button is a tiny device that orders products from Amazon.com at the press of a button. It's designed to be put wherever you store consumeables like paper towels, trash bags, etc. so that you can easily order more when they run out. The Dash is great at what it's designed to do, but did you know inside the Dash is a powerful ARM Cortex-M3 processor and WiFi module that are very similar to wireless development boards like the Particle Photon? You'll even find there are easily accessible test pads on the Dash which allow you to reprogram its CPU and turn it into your own $5 internet button! This guide will explore how to take apart the Dash and reprogram its CPU to run your own code. ... The CPU is a STM32F205RG6 processor which is an ARM Cortex-M3 that can run up to 120mhz and has 128 kilobytes of RAM and 1 megabyte of flash memory for program storage. The WiFi module is a BCM943362 module which in combination with the CPU make it a platform for Broadcom's WICED SDK. There's a 16 megabit SPI flash ROM which is typically used in conjunction with the WICED SDK for storing application data. An ADMP441 microphone is connected to the CPU and used by the Dash iOS application to configure the device using the speaker on a phone/tablet. There's a single RGB LED and a button.By what you are saying, I believe it should be doable. Although I'm a little worried for the WiFi support. Do you need to include the code to drive it beyond wrap up some communication to it? 1mb flash should be enough to run D code on it. If you strip out a good percentage of druntime and definitely no Phobos. Although you may be able to mark and use some of that 16mb flash rom as executable code storage. If that's so, you'll be in a good place to have more then 1mb. It would require some clever runtime linking tricks however. I'm probably not the best person to go more in depth about it or the specific chips. So I won't. Most of my knowledge comes from reading what others says and talking with Jens Bauer.
Aug 18 2015
Rikki Cattermole <alphaglosined gmail.com> On 19/08/2015 3:24 a.m., Laeeth Isharc wrote:On Tuesday, 18 August 2015 at 04:36:49 UTC, Rikki Cattermole wrote:I was thinking about that. Maybe for speech recognition? Of course there is no way that device could actually analyze it.On 18/08/2015 1:32 p.m., Laeeth Isharc wrote:I think its doable too. Nobody seems to have figured out the wifi yet - more at LED flashing stage. It's funny these wifi devices have microphones in them !I don't know whether D can run on one, but from a quick look perhaps feasible. Running D on something like this (perhaps it's underpowered, but looked to have similar spec to what people had been doing with related ARM cortex processors) would certainly make the point very vivid that it can be a bare metal programming language. Only 1Mb of flash RAM for the program - is that enough? https://learn.adafruit.com/dash-hacking-bare-metal-stm32-programming/programming https://learn.adafruit.com/dash-hacking-bare-metal-stm32-programming/overview The Amazon Dash button is a tiny device that orders products from Amazon.com at the press of a button. It's designed to be put wherever you store consumeables like paper towels, trash bags, etc. so that you can easily order more when they run out. The Dash is great at what it's designed to do, but did you know inside the Dash is a powerful ARM Cortex-M3 processor and WiFi module that are very similar to wireless development boards like the Particle Photon? You'll even find there are easily accessible test pads on the Dash which allow you to reprogram its CPU and turn it into your own $5 internet button! This guide will explore how to take apart the Dash and reprogram its CPU to run your own code. ... The CPU is a STM32F205RG6 processor which is an ARM Cortex-M3 that can run up to 120mhz and has 128 kilobytes of RAM and 1 megabyte of flash memory for program storage. The WiFi module is a BCM943362 module which in combination with the CPU make it a platform for Broadcom's WICED SDK. There's a 16 megabit SPI flash ROM which is typically used in conjunction with the WICED SDK for storing application data. An ADMP441 microphone is connected to the CPU and used by the Dash iOS application to configure the device using the speaker on a phone/tablet. There's a single RGB LED and a button.By what you are saying, I believe it should be doable. Although I'm a little worried for the WiFi support. Do you need to include the code to drive it beyond wrap up some communication to it? 1mb flash should be enough to run D code on it. If you strip out a good percentage of druntime and definitely no Phobos. Although you may be able to mark and use some of that 16mb flash rom as executable code storage. If that's so, you'll be in a good place to have more then 1mb. It would require some clever runtime linking tricks however. I'm probably not the best person to go more in depth about it or the specific chips. So I won't. Most of my knowledge comes from reading what others says and talking with Jens Bauer.
Aug 18 2015
On Tuesday, 18 August 2015 at 01:32:13 UTC, Laeeth Isharc wrote:I don't know whether D can run on one, but from a quick look perhaps feasible. Running D on something like this (perhaps it's underpowered, but looked to have similar spec to what people had been doing with related ARM cortex processors) would certainly make the point very vivid that it can be a bare metal programming language. Only 1Mb of flash RAM for the program - is that enough?Yes, with the right techniques. Everything one needs to get started is documented at http://wiki.dlang.org/Minimal_semihosted_ARM_Cortex-M_%22Hello_World%22 A more complete proof of concept on similar hardware can be found at https://github.com/JinShil/stm32f42_discovery_demo Mike
Aug 20 2015
On Thursday, 20 August 2015 at 09:08:02 UTC, Mike wrote:On Tuesday, 18 August 2015 at 01:32:13 UTC, Laeeth Isharc wrote:Thanks, Mike. I have a mind to do this when time just to make a point next time someone who has never used the language starts on about the GC... ;) Unfort without libraries to control wifi unit or ultrasound, that's of minimal value today, but I am sure someone will figure that out in time.I don't know whether D can run on one, but from a quick look perhaps feasible. Running D on something like this (perhaps it's underpowered, but looked to have similar spec to what people had been doing with related ARM cortex processors) would certainly make the point very vivid that it can be a bare metal programming language. Only 1Mb of flash RAM for the program - is that enough?Yes, with the right techniques. Everything one needs to get started is documented at http://wiki.dlang.org/Minimal_semihosted_ARM_Cortex-M_%22Hello_World%22 A more complete proof of concept on similar hardware can be found at https://github.com/JinShil/stm32f42_discovery_demo Mike
Aug 20 2015