08e6846cc5
Add missing option to clock configuration
9 years ago
21de622469
Added hardware check on bootup: fault LED will light if Upstream
...
firmware is placed on Downstream hardware or vice versa.
9 years ago
2983da24b2
Changed Upstream and Downstream SPI transfers back to DMA. DMA works
...
correctly now, either because SPI is in 16-bit mode, or because I found
all the other bugs!
Doubled SPI baudrate to 10.5Mbps. Transfer speed now limited (again) by
Downstream's lack of FIFO buffering in the USB host controller.
Also disabled DMA transaction half-complete interrupt in
stm32f4xx_hal_dma.c, as it wasn't doing anything useful.
9 years ago
cd663a0651
Two bugfixes for Upstream's SPI packet handling:
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- Use asynchronous free packet callback for Upstream_MSC_BeginRead
- Upstream_MSC_BeginWrite freed packet too early
9 years ago
431a527e24
Tidy up commented DMA init code
9 years ago
58308c4a89
Added Mozilla Public License information to file headers.
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Mozilla Public License v2.0 is compatible with the various licenses used
by ST and ARM.
9 years ago
2e3293e84f
Increase SPI interface speed 4x, to 5.25Mbps. Required modifications to
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SPI peripheral library. At this speed SPI requires ~60% CPU time at -Og
optimisation level. This could be further improved by trimming down the
SPI interrupt. But...
Speed is now limited by Downstream's single-packet-per-URB restriction,
to about 460kB/s. USB Middleware does not implement TX FIFO empty
interrupt, so a bit of work is required here.
9 years ago
08c8c7a6d6
Code tidyup - remove unused SPI Tx-only and Rx-only routines
9 years ago
d48815d8d9
IT. WORKS. !!!!!!!
9 years ago
ce03845623
Completed moving Upstream to interrupt-based SPI.
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Although I am not entirely convinced this is necessary, as the SPI data
stall issue only appeared with optimisation off (-O0). Perhaps re-visit
this if Upstream needs more free CPU time later...
9 years ago
b9cc31d036
Crazy hardware issues, about to revert Upstream SPI from DMA to
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interrupt transfers
9 years ago
750c2f3a21
- Implement notification of Downstream USB device removal, and
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corresponding Upstream disconnection
- Improve Upstream handling of TxOk signal from Downstream
- Misc tweaks
9 years ago
f24714cd8c
Revisit Upstream project to:
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- Implement Upstream state machine, with Downstream-dependent device
emulation
- Add fault LED flashing
- Improve fault handling and freakouts
- Misc bug fixes
9 years ago
0e1fed6047
Full implementation of Downstream MSC interface, including significant
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modifications to USB host MSC.
Also, minor tweaks to Upstream.
9 years ago
b271e038a3
More refactoring in Upstream project
9 years ago
4350666330
Refactor a bunch of stuff in Upstream project to avoid endless confusion
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with Downstream project.
Also fixed a couple of things in upstream_spi.c and
upstream_interface_msc.c but due to file rename the diff is not
obvious...
9 years ago
7b4e4b3c14
Continued polishing work on Downstream project.
9 years ago
503d79de56
Streamlining Downstream project
9 years ago
8f41552214
Updated STM32 library from v1.4.0 to v1.7.0
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Significant changes to:
- stm32f4xx_hal_spi.c
- stm32f4xx_hal_gpio.c
- stm32f4xx_ll_usb.c
- usbd_core.c
- usbd_ctrlreq.c
9 years ago
69d1490faa
Upstream debugged and working again, emulating a 128MB storage device.
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Implemented mock downstream_interface_msc.c for debugging purposes.
Multiple bugfixes and tweaks to:
- downstream_interface_msc.c
- downstream_spi.c
- usbd_core.c
- usbd_msc.c
- usbd_msc_scsi.c
- stm32f4xx_hal_pcd.c
9 years ago
aa72df1bbf
Minor tweaks to downstream interface
9 years ago
d3da69eb07
Draft implementation of downstream SPI interface. Significant mods
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required to USB MSC class, mainly in usbd_msc_scsi.c. Currently
untested!
9 years ago
6d7d86b2f5
Initial commit!
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Upstream (device) firmware builds, emulates a small USB block device
filled with zeroes.
10 years ago
Robert Fisk