EMTime/libopencm3
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

First coarse run to fix coding style in locm3.

Browse Source 
Added --terse and --mailback options to the make stylecheck target. It
also does continue even if it enounters a possible error.

We decided on two exceptions from the linux kernel coding standard:
- Empty wait while loops may end with ; on the same line.
- All blocks after while, if, for have to be in brackets even if they
  only contain one statement. Otherwise it is easy to introduce an
  error.

Checkpatch needs to be adapted to reflect those changes.
This commit is contained in:
Piotr Esden-Tempski
2013-06-12 17:44:07 -07:00
parent 48e0f3326b
commit 7df63fcae0
147 changed files with 3323 additions and 2565 deletions
Download Patch File Download Diff File Expand all files Collapse all files

78
lib/stm32/f1/gpio.c
View File

@@ -6,23 +6,25 @@
@version 1.0.0
@author @htmlonly &copy; @endhtmlonly 2009 Uwe Hermann <uwe@hermann-uwe.de>
@author @htmlonly &copy; @endhtmlonly 2012 Ken Sarkies <ksarkies@internode.on.net>
@author @htmlonly &copy; @endhtmlonly 2009
Uwe Hermann <uwe@hermann-uwe.de>
@author @htmlonly &copy; @endhtmlonly 2012
Ken Sarkies <ksarkies@internode.on.net>
@date 18 August 2012
Each I/O port has 16 individually configurable bits. Many I/O pins share GPIO
functionality with a number of alternate functions and must be configured to the
alternate function mode if these are to be accessed. A feature is available to
remap alternative functions to a limited set of alternative pins in the event
of a clash of requirements.
functionality with a number of alternate functions and must be configured to
the alternate function mode if these are to be accessed. A feature is available
to remap alternative functions to a limited set of alternative pins in the
event of a clash of requirements.
The data registers associated with each port for input and output are 32 bit with
the upper 16 bits unused. The output buffer must be written as a 32 bit word, but
individual bits may be set or reset separately in atomic operations to avoid race
conditions during interrupts. Bits may also be individually locked to prevent
accidental configuration changes. Once locked the configuration cannot be changed
until after the next reset.
The data registers associated with each port for input and output are 32 bit
with the upper 16 bits unused. The output buffer must be written as a 32 bit
word, but individual bits may be set or reset separately in atomic operations
to avoid race conditions during interrupts. Bits may also be individually
locked to prevent accidental configuration changes. Once locked the
configuration cannot be changed until after the next reset.
Each port bit can be configured as analog or digital input, the latter can be
floating or pulled up or down. As outputs they can be configured as either
@@ -76,7 +78,7 @@ LGPL License Terms @ref lgpl_license
/**@{*/
/*-----------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/** @brief Set GPIO Pin Mode
Sets the mode (input/output) and configuration (analog/digitial and
@@ -86,7 +88,8 @@ open drain/push pull), for a set of GPIO pins on a given GPIO port.
@param[in] mode Unsigned int8. Pin mode @ref gpio_mode
@param[in] cnf Unsigned int8. Pin configuration @ref gpio_cnf
@param[in] gpios Unsigned int16. Pin identifiers @ref gpio_pin_id
If multiple pins are to be set, use logical OR '|' to separate them.
If multiple pins are to be set, use logical OR '|' to separate
them.
*/
void gpio_set_mode(u32 gpioport, u8 mode, u8 cnf, u16 gpios)
@@ -104,8 +107,9 @@ void gpio_set_mode(u32 gpioport, u8 mode, u8 cnf, u16 gpios)
/* Iterate over all bits, use i as the bitnumber. */
for (i = 0; i < 16; i++) {
/* Only set the config if the bit is set in gpios. */
if (!((1 << i) & gpios))
if (!((1 << i) & gpios)) {
continue;
}
/* Calculate bit offset. */
offset = (i < 8) ? (i * 4) : ((i - 8) * 4);
@@ -126,7 +130,7 @@ void gpio_set_mode(u32 gpioport, u8 mode, u8 cnf, u16 gpios)
GPIO_CRH(gpioport) = crh;
}
/*-----------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/** @brief Map the EVENTOUT signal
Enable the EVENTOUT signal and select the port and pin to be used.
@@ -139,45 +143,47 @@ void gpio_set_eventout(u8 evoutport, u8 evoutpin)
AFIO_EVCR = AFIO_EVCR_EVOE | evoutport | evoutpin;
}
/*-----------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/** @brief Map Alternate Function Port Bits (Main Set)
A number of alternate function ports can be remapped to defined alternative
port bits to avoid clashes in cases where multiple alternate functions are present.
Refer to the datasheets for the particular mapping desired. This provides the main
set of remap functionality. See @ref gpio_secondary_remap for a number of lesser used
remaps.
port bits to avoid clashes in cases where multiple alternate functions are
present. Refer to the datasheets for the particular mapping desired. This
provides the main set of remap functionality. See @ref gpio_secondary_remap for
a number of lesser used remaps.
The AFIO remapping feature is used only with the STM32F10x series.
@note The Serial Wire JTAG disable controls allow certain GPIO ports to become available
in place of some of the SWJ signals. Full SWJ capability is obtained by setting this to
zero. The value of this must be specified for every call to this function as its current
value cannot be ascertained from the hardware.
@note The Serial Wire JTAG disable controls allow certain GPIO ports to become
available in place of some of the SWJ signals. Full SWJ capability is obtained
by setting this to zero. The value of this must be specified for every call to
this function as its current value cannot be ascertained from the hardware.
@param[in] swjdisable Unsigned int8. Disable parts of the SWJ capability @ref afio_swj_disable.
@param[in] maps Unsigned int32. Logical OR of map enable controls from @ref afio_remap,
@ref afio_remap_can1, @ref afio_remap_tim3, @ref afio_remap_tim2, @ref afio_remap_tim1,
@ref afio_remap_usart3. For connectivity line devices only @ref afio_remap_cld are
also available.
@param[in] swjdisable Unsigned int8. Disable parts of the SWJ capability @ref
afio_swj_disable.
@param[in] maps Unsigned int32. Logical OR of map enable controls from @ref
afio_remap, @ref afio_remap_can1, @ref afio_remap_tim3, @ref afio_remap_tim2,
@ref afio_remap_tim1, @ref afio_remap_usart3. For connectivity line devices
only @ref afio_remap_cld are also available.
*/
void gpio_primary_remap(u32 swjdisable, u32 maps)
{
AFIO_MAPR |= (swjdisable & AFIO_MAPR_SWJ_MASK) | (maps & 0x1FFFFF);
}
/*-----------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/** @brief Map Alternate Function Port Bits (Secondary Set)
A number of alternate function ports can be remapped to defined alternative
port bits to avoid clashes in cases where multiple alternate functions are present.
Refer to the datasheets for the particular mapping desired. This provides the second
smaller and less used set of remap functionality. See @ref gpio_primary_remap for
the main set of remaps.
port bits to avoid clashes in cases where multiple alternate functions are
present. Refer to the datasheets for the particular mapping desired. This
provides the second smaller and less used set of remap functionality. See @ref
gpio_primary_remap for the main set of remaps.
The AFIO remapping feature is used only with the STM32F10x series.
@param[in] maps Unsigned int32. Logical OR of map enable controls from @ref afio_remap2
@param[in] maps Unsigned int32. Logical OR of map enable controls from @ref
afio_remap2
*/
void gpio_secondary_remap(u32 maps)
{