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Sharp CE-515P Problem
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01-19-2024, 04:05 PM
Post: #6
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RE: Sharp CE-515P Problem
I did a video a few weeks about RS-232 woes and got an email from someone who said the problem I demonstrated with interfacing a PC-1500/CE-158 with a CGP-115 helped them with a similar issue.
This got me to thinking about this thread and wondering if it was something similar given the CGP-115 and CE-515P are both Alps mech printers. Video link below. Spoiler alert: The problem was that the printer set the BUSY signal as soon as the first bit was received. I had this signal wired up as CTS. When the UART in the CE-158 saw CTS change it stopped shifting bits out. The result was garbage printing. I rewired BUSY to DSR and looped back RTS/CTS and all was well. |
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Sharp CE-515P Problem - toml_12953 - 08-28-2023, 03:08 AM
RE: Sharp CE-515P Problem - Jeff_Birt - 08-28-2023, 12:04 PM
RE: Sharp CE-515P Problem - toml_12953 - 08-28-2023, 09:15 PM
RE: Sharp CE-515P Problem - Jeff_Birt - 08-28-2023, 10:02 PM
RE: Sharp CE-515P Problem - toml_12953 - 08-29-2023, 12:33 AM
RE: Sharp CE-515P Problem - Jeff_Birt - 01-19-2024 04:05 PM
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