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Erik Strand
lufa
Commits
1e3513ed
Commit
1e3513ed
authored
Dec 09, 2009
by
Dean Camera
Browse files
Add even parity bit to the software USART framing in the AVRISP project's PDI programming code.
parent
9c8ed168
Changes
2
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LUFA/ManPages/ChangeLog.txt
View file @
1e3513ed
...
...
@@ -39,6 +39,8 @@
* with the rest of the library errorcodes
* - Make MIDI device demos also turn off the on board LEDs if MIDI Note On messages are sent with a velocity of zero,
* which some devices use instead of Note Off messages (thanks to Robin Green)
* - The CDC demos are now named "VirtualSerial" instead to indicate the demos' function rather than its implemented USB class,
* to reduce confusion and to be in line with the rest of the LUFA demos
*
* <b>Fixed:</b>
* - Added missing CDC_Host_CreateBlockingStream() function code to the CDC Host Class driver
...
...
@@ -56,7 +58,7 @@
* - Fixed TeensyHID bootloader not properly shutting down the USB interface to trigger a disconnection on the host before resetting
* - Fixed MassStorageHost Class driver demo not having USB_STREAM_TIMEOUT_MS compile time option set properly to prevent slow
* devices from timing out the data pipes
* - Fixed the definition of the Endpoint_BytesInEndpoint() macro for the U4 parts
* - Fixed the definition of the Endpoint_BytesInEndpoint() macro for the U4
series AVR
parts
*
* \section Sec_ChangeLog091122 Version 091122
*
...
...
Projects/AVRISP/Lib/PDITarget.c
View file @
1e3513ed
...
...
@@ -45,24 +45,42 @@
*/
void
PDITarget_SendByte
(
uint8_t
Byte
)
{
uint8_t
LogicOneBits
=
0
;
// One Start Bit
PDIDATA_LINE_PORT
&=
~
PDIDATA_LINE_MASK
;
TOGGLE_PDI_CLOCK
;
// Eight Data Bits
for
(
uint8_t
i
=
0
;
i
<
8
;
i
++
)
{
if
(
Byte
&
0x01
)
PDIDATA_LINE_PORT
&=
~
PDIDATA_LINE_MASK
;
{
PDIDATA_LINE_PORT
&=
~
PDIDATA_LINE_MASK
;
LogicOneBits
++
;
}
else
PDIDATA_LINE_PORT
|=
PDIDATA_LINE_MASK
;
{
PDIDATA_LINE_PORT
|=
PDIDATA_LINE_MASK
;
}
Byte
>>=
1
;
TOGGLE_PDI_CLOCK
;
}
PDIDATA_LINE_PORT
|=
PDIDATA_LINE_MASK
;
// Even Parity Bit
if
(
LogicOneBits
&
0x01
)
PDIDATA_LINE_PORT
&=
~
PDIDATA_LINE_MASK
;
else
PDIDATA_LINE_PORT
|=
PDIDATA_LINE_MASK
;
TOGGLE_PDI_CLOCK
;
// Two Stop Bits
PDIDATA_LINE_PORT
|=
PDIDATA_LINE_MASK
;
TOGGLE_PDI_CLOCK
;
TOGGLE_PDI_CLOCK
;
}
...
...
@@ -77,9 +95,11 @@ uint8_t PDITarget_ReceiveByte(void)
PDIDATA_LINE_DDR
&=
~
PDIDATA_LINE_MASK
;
// One Start Bit
while
(
PDIDATA_LINE_PIN
&
PDIDATA_LINE_MASK
);
TOGGLE_PDI_CLOCK
;
// Eight Data Bits
for
(
uint8_t
i
=
0
;
i
<
8
;
i
++
)
{
if
(
PDIDATA_LINE_PIN
&
PDIDATA_LINE_MASK
)
...
...
@@ -90,6 +110,10 @@ uint8_t PDITarget_ReceiveByte(void)
TOGGLE_PDI_CLOCK
;
}
// Even Parity Bit (discarded)
TOGGLE_PDI_CLOCK
;
// Two Stop Bits
TOGGLE_PDI_CLOCK
;
TOGGLE_PDI_CLOCK
;
...
...
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