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Path: ...!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: Brian Gregory <void-invalid-dead-dontuse@email.invalid> Newsgroups: comp.sys.raspberry-pi Subject: Re: RP2040 / Pico shared ram? Date: Tue, 8 Oct 2024 03:04:11 +0100 Organization: https://www.Brian-Gregory.me.uk/ Lines: 13 Message-ID: <lmji92Fec33U1@mid.individual.net> References: <kh6ufjdf1g6d6sp2q279mtp08lusibf8v4@4ax.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: individual.net hsliJjkWKqpUjgRrBdJe+Q8g9kItxcO/ZSnAsoQnd1k42ssZaq Cancel-Lock: sha1:zi8Q8+DPaRaZwUsQad8H+1BVKJU= sha256:CH89DAbBzwFsZ2j+TND1XmI2yGnyAvIfiyC6nxpqVRo= User-Agent: Mozilla Thunderbird Content-Language: en-GB In-Reply-To: <kh6ufjdf1g6d6sp2q279mtp08lusibf8v4@4ax.com> Bytes: 1383 On 03/10/2024 23:32, john larkin wrote: > Given an RP2040 CPU with two ARM processors (we call them Alice and > Bob), how can they talk to one another? > > We hate FIFOs. Is it possible for them to share a block of the SRAM? > It would be cool if the two programs could both declare a struct and > both be able to access it simultaneously. We's manage the access > details ourselves, who writes to what variables. Don't they share all the RAM like any other 2 core processor would? -- Brian Gregory (in England).