mjb/altos/src/stm/ao_usb_stm.c, branch hack-cc1200

altos: Expose ao_usb_running globally

2014-02-18T17:44:52+00:00

This lets other bits of the code know when USB has been connected. Signed-off-by: Keith Packard

altos: Clean up some minor warnings from -Wall

2013-12-21T06:19:35+00:00

Unused variables, functions and labels, missing enums in switch. Signed-off-by: Keith Packard

altos/stm: Semantic error in STM usb disable caused it to not work

2013-12-19T02:20:55+00:00

The USB enable register wasn't actually getting rewritten with the enable bit turned off, so the USB device was still powered on in flight. Signed-off-by: Keith Packard

altos: Use all 16 bits of setup packet len when limiting reply len

2013-12-18T07:53:59+00:00

We were only using the low 8 bits of the setup packet reply max len, which meant that if the other side sent a weird max len (as Windows 7 does), then we'd truncate our setup reply to whatever was in the low 8 bits of that value. Signed-off-by: Keith Packard

altos: Allow STM usb driver to be used without stdio

2013-05-08T04:30:26+00:00

This lets the self flashing loader be linked without any of the stdio code, which saves a bunch of memory. Signed-off-by: Keith Packard

altos/stm: Remove USB EP0 task

2013-05-08T03:07:52+00:00

Handl EP0 actions from interrupt handler. This allows USB to be used in a taskless environment, like the STM flash loader Signed-off-by: Keith Packard

altos/stm: Always check for idle IN buffer before sending

2013-03-31T19:24:38+00:00

Unlike the AVR and CC1111 USB drivers, the STM usb driver queues IN bytes in a local buffer instead of in the driver; this means that the driver is queuing bytes while the previous IN packet is queued for the host, which allows for overlapping execution. It also means that when the local buffer is full, we must check to see if the host has picked up the previous IN packet before trying to queue another IN packet for transmission. This is done by always waiting for the IN buffer to be ready before sending data. Signed-off-by: Keith Packard

altos/stm: Add debugging mechanism to STM USB driver

2013-03-31T19:24:28+00:00

This adds a pile of debugging hooks to the USB driver to try and isolate various lockup-related issues. It's all disabled by default, of course. Signed-off-by: Keith Packard

altos: Do not release interrupts from any pollchar function

2013-03-31T19:24:24+00:00

getchar relies on interrupts being blocked across the pollchar calls and into the sleep call or it may go to sleep with data pending. This prefixes all pollchar functions with _ to indicate that they are to be called with interrupts blocked and eliminates all interrupt manipulation calls from within the pollchar functions. Signed-off-by: Keith Packard

altos: Make stdio 8-bit clean by making pollchar return int

2012-12-01T00:01:07+00:00

We were stealing one value (0xff) in the return value from pollchar to indicate 'not ready yet'. Instead of doing that, use the integer value -1 and have pollchar return an int instead of a char. That necessitated cleaning a few other bits to make sure that 0xff wouldn't get promoted to -1 on accident. Signed-off-by: Keith Packard