Adhithya Rajasekaran / MODSERIAL

Bug fix release

Dependents:   esp8266test

Fork of MODSERIAL by Andy K

ChangeLog.c@11:a93a62eeeb9d, 2010-11-24 (annotated)

Committer:
AjK
Date:
Wed Nov 24 00:33:40 2010 +0000
Revision:
11:a93a62eeeb9d
Parent:
10:725fe81aa9ff
Child:
12:8c7394e2ae7f
1.11

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AjK 1:b7e435fbfe8e 1 /* $Id:$
AjK 2:b936b4acbd92 2
AjK 11:a93a62eeeb9d 3 1.11 - 23/11/2010
AjK 11:a93a62eeeb9d 4
AjK 11:a93a62eeeb9d 5 * Fixed a minor issue with 1.10 missed an alteration of name change.
AjK 11:a93a62eeeb9d 6
AjK 10:725fe81aa9ff 7 1.10 - 23/11/2010
AjK 10:725fe81aa9ff 8
AjK 10:725fe81aa9ff 9 * Reanme the DMA callback from attach_dma_complete() to attach_dmaSendComplete()
AjK 10:725fe81aa9ff 10
AjK 9:b3cdae80e7a9 11 1.9 - 23/11/2010
AjK 9:b3cdae80e7a9 12
AjK 9:b3cdae80e7a9 13 * Added support for DMA sending of characters. Required is
AjK 9:b3cdae80e7a9 14 the MODDMA library module:-
AjK 9:b3cdae80e7a9 15 http://mbed.org/users/AjK/libraries/MODDMA/latest
AjK 9:b3cdae80e7a9 16 See example_dma.cpp for more information.
AjK 9:b3cdae80e7a9 17
AjK 8:775f860e94d3 18 1.8 - 22/11/2010
AjK 8:775f860e94d3 19
AjK 8:775f860e94d3 20 * Added code so that if a buffer is set to zero length then
AjK 8:775f860e94d3 21 MODSERIAL defaults to just using the FIFO for that stream
AjK 8:775f860e94d3 22 thus making the library "fall back" to teh same operation
AjK 8:775f860e94d3 23 that the Mbed Serial library performs.
AjK 8:775f860e94d3 24 * Removed dmaSend() function that should have been removed
AjK 8:775f860e94d3 25 at 1.7
AjK 8:775f860e94d3 26
AjK 7:ffa4a7cb7f8d 27 1.7 - 21/11/2010
AjK 7:ffa4a7cb7f8d 28
AjK 7:ffa4a7cb7f8d 29 * Remove the DMA enum from MODSERIAL.h as it's not currently
AjK 7:ffa4a7cb7f8d 30 ready for release.
AjK 7:ffa4a7cb7f8d 31 * Added page doxygen comments.
AjK 7:ffa4a7cb7f8d 32
AjK 6:c8f77fe1cc10 33 1.6 - 21/11/2010
AjK 6:c8f77fe1cc10 34
AjK 6:c8f77fe1cc10 35 * Version 1.5 solved a blocking problem on putc() when called
AjK 6:c8f77fe1cc10 36 from another ISR. However, isr_tx() invokes a callback of it's
AjK 6:c8f77fe1cc10 37 own when a byte is tranferred from TX buffer to TX FIFO. User
AjK 6:c8f77fe1cc10 38 programs may interpret that as an IRQ callback. That's an ISR
AjK 6:c8f77fe1cc10 39 call from within an existing ISR which is not good. So the
AjK 6:c8f77fe1cc10 40 TxIrq callback from isr_tx is now conditional. It will only
AjK 6:c8f77fe1cc10 41 be called when isr_tx() is actually within it's own ISR and
AjK 6:c8f77fe1cc10 42 not when called from alternate ISR handlers.
AjK 6:c8f77fe1cc10 43
AjK 5:8365c4cf8f33 44 1.5 - 21/11/2010
AjK 5:8365c4cf8f33 45
AjK 5:8365c4cf8f33 46 * Calling putc() (or any derived function that uses it like
AjK 5:8365c4cf8f33 47 printf()) while inside an interrupt service routine can
AjK 5:8365c4cf8f33 48 cause the system to lock up if the TX buffer is full. This
AjK 5:8365c4cf8f33 49 is because bytes are only transferred from the TX buffer to
AjK 5:8365c4cf8f33 50 the TX FIFO via the TX ISR. If we are, say in an RX ISR already,
AjK 5:8365c4cf8f33 51 then the TX ISR will never trigger. The TX buffer stays full and
AjK 5:8365c4cf8f33 52 there is never space to putc() the byte. So, while putc() blocks
AjK 5:8365c4cf8f33 53 waiting for space it calls isr_tx() to ensure if TX FIFO space
AjK 5:8365c4cf8f33 54 becomes available it will move bytes from the TX buffer to TX
AjK 5:8365c4cf8f33 55 FIFO thus removing the blocking condition within putc().
AjK 5:8365c4cf8f33 56
AjK 4:28de979b77cf 57 1.4 - 21/11/2010
AjK 4:28de979b77cf 58
AjK 4:28de979b77cf 59 * Removed all the new DMA code. I wish mbed.org had proper SVN
AjK 4:28de979b77cf 60 versioning, I'm use to working in HEAD and BRANCHES after I've
AjK 4:28de979b77cf 61 released a project. Getting bug reports in current releases
AjK 4:28de979b77cf 62 while trying to dev new code is hard to manage without source
AjK 4:28de979b77cf 63 control of some type!
AjK 4:28de979b77cf 64
AjK 2:b936b4acbd92 65 1.3 - 21/11/2010
AjK 2:b936b4acbd92 66
AjK 2:b936b4acbd92 67 * Fixed a macro problem with txIsBusy()
AjK 2:b936b4acbd92 68 * Started adding code to use "block data" sending using DMA
AjK 3:0f10f536456e 69 * Removed #include "IOMACROS.h"
AjK 1:b7e435fbfe8e 70
AjK 2:b936b4acbd92 71 1.2 - 21/11/2010
AjK 2:b936b4acbd92 72
AjK 2:b936b4acbd92 73 * Removed unsed variables from flushBuffer()
AjK 2:b936b4acbd92 74 * Fixed a bug where both RX AND TX fifos are cleared/reset
AjK 2:b936b4acbd92 75 when just TX OR RX should be cleared.
AjK 2:b936b4acbd92 76 * Fixed a bug that cleared IIR when in fact it should be left
AjK 2:b936b4acbd92 77 alone so that any pending interrupt after flush is handled.
AjK 2:b936b4acbd92 78 * Merged setBase() into init() as it wasn't required anywhere else.
AjK 2:b936b4acbd92 79 * Changed init() to enforce _uidx is set by Serial to define the _base
AjK 2:b936b4acbd92 80 address of the Uart in use.
AjK 2:b936b4acbd92 81
AjK 1:b7e435fbfe8e 82 1.1 - 20/11/2010
AjK 1:b7e435fbfe8e 83
AjK 1:b7e435fbfe8e 84 * Added this file
AjK 1:b7e435fbfe8e 85 * Removed cruft from GETC.cpp
AjK 1:b7e435fbfe8e 86 * "teh" should be "the", why do my fingers do that?
AjK 1:b7e435fbfe8e 87
AjK 1:b7e435fbfe8e 88 1.0 - 20/11/2010
AjK 1:b7e435fbfe8e 89
AjK 1:b7e435fbfe8e 90 * First release.
AjK 1:b7e435fbfe8e 91
AjK 1:b7e435fbfe8e 92 */