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* Revert "- tx and rx callbacks for each module"Marti Bolivar2014-01-101-234/+1
| | | | | | | | This reverts commit da01c80f24dc9c43ff951ea9fd283abb4628ceb7. Reverting pull request #54, which breaks examples/i2c-mcp4725-dac.cpp. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Revert "I2C slave support cleanups."Marti Bolivar2014-01-101-35/+5
| | | | | | | | This reverts commit 39cd07a640ee87b7937738d36f17019b2865bfae. Reverting pull request #54, which breaks examples/i2c-mcp4725-dac.cpp. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Revert "Added I2C slave echo example in examples folder. Using another ↵Marti Bolivar2014-01-101-4/+0
| | | | | | | | | | maple, write a byte and then read." This reverts commit 594724951553a882758c11497a4f03828b4f43e6. Reverting pull request #54, which breaks examples/i2c-mcp4725-dac.cpp. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Added I2C slave echo example in examples folder. Using another maple, write ↵Barry Carter2012-09-051-0/+4
| | | | | | | | | | a byte and then read. Slight tidy up. Reformatted CREDITS file to be in correct order. Added a note about buffer overrun Signed-off-by:- Barry Carter <barry.carter@gmail.com>
* I2C slave support cleanups.Barry Carter2012-09-041-5/+35
| | | | | | | | | | Added fix for corner case where badly behaving master doesn't NACK and we don't get the callbacks fires. Removed my own name from several places and added attribution to the correct place. Updated include comments to reference the fact it now supports I2C slave Signed-off-by:- Barry Carter <barry.carter@gmail.com>
* - tx and rx callbacks for each moduleBarry Carter2012-09-031-1/+234
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Callbacks can be called after each read/write cycle or per byte - Each I2C module can have different callbacks - General call support also working - Supports master and slave at same time. Also works with multimaster Usage: i2c_msg msg; char buffer[255]; main() { i2c_slave_enable(I2C1, I2C_FAST_MODE | I2C_SLAVE_DUAL_ADDRESS | I2C_SLAVE_GENERAL_CALL | I2C_SLAVE_USE_RX_BUFFER); // init slave mode. Enables master too i2c_slave_attach_recv_handler(I2C1, pmsg, funcrx); // attach receive handler i2c_slave_attach_transmit_handler(I2C1, pmsg, functx); // attach transmit handler i2c_slave_set_own_address(I2C1, 0x10); // set addresss 1 i2c_slave_set_own_address2(I2C1, 0x20); // set addresss 2 } void funcrx(i2c_msg *msg) { printf("length is %d.\n", msg->length); char return_data = msg0>data[0]; } void functx(i2c_msg *dev) { msg->data[0] = 0x01; msg->data[1] = 0x02; msg->data[2] = 0x03; msg->data[3] = 0x04; msg->data[4] = 0x05; msg->length = 5; } All code derived from datasheets and libmaple. Signed-off-by:- Barry Carter <barry.carter@gmail.com>
* I2C: Move CCR/TRISE config helper back to libmaple/i2c.c.Marti Bolivar2012-06-221-1/+41
| | | | | | | | | | | | We can implement it in terms of _i2c_bus_clk() instead of hard-coding STM32_PCLK1. This might be overkill, since I2C peripherals are slow and thus likely to be on APB1 for all STM32 devices (that is the case for F2/F4, for instance), but if we're going to have _i2c_bus_clk(), we might as well respect it. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* i2c_dev: deprecate .gpio_port.Marti Bolivar2012-06-221-8/+8
| | | | | | | | | | | | | This won't work on F2, which at times has SDA and SCL on different ports (e.g. I2C3 SDA on PC9, SCL on PA8). Add .sda_port and .scl_port replacements, which are used when the now-deprecated .gpio_port is null. Use them correctly everywhere, with some new i2c_private.h helper functionality. Sigh. The F1 I2C code tries too hard to guess what you wanted; it's not porting well at all. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* I2C: Move nonportable CCR/TRISE configuration.Marti Bolivar2012-06-221-33/+4
| | | | | | Do this via new private _i2c_set_ccr_trise(). Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* I2C: Deprecate I2C_REMAP flag.Marti Bolivar2012-06-221-6/+9
| | | | | | | | This is ad-hoc and nonportable. If you really want I2C mapped elsewhere, then mess with the I2C device fields and call afio_remap() yourself. (This is also cleaner for F2). Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* I2C: Move F1-only errata workarounds out of libmaple/i2c.c.Marti Bolivar2012-06-221-30/+0
| | | | | | | | | The IRQ priority hack is unnecessary on targets with properly functioning I2C IRQ handlers, so we shouldn't use it unless we have to. Add a mechanism so a series header can provide such a hack if necessary. Have the F1 series header use this mechanism. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple/i2c.c: Cosmetics.Marti Bolivar2012-06-221-188/+190
| | | | | | Move private API to bottom of file. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple/i2c.c: Keep authorship straight.Marti Bolivar2012-06-221-0/+1
| | | | | | | I'm going to be moving a lot of code around without changing it soon, so git blame will be unreliable. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* I2C: Add i2c_config_gpios(), i2c_master_release_bus().Marti Bolivar2012-06-221-6/+2
| | | | | | These are necessary to pull out some calls to gpio_set_mode(). Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple/i2c.c: Replace throb() with ASSERT(0).Marti Bolivar2012-06-221-1/+1
| | | | | | Calling throb() directly like that breaks the abstraction. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* I2C: I don't think 10-bit addressing works.Marti Bolivar2012-06-221-0/+3
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* I2C: Restore on F1, refactoring prep for F2.Marti Bolivar2012-06-221-44/+3
| | | | | | | | | | | | | | | | | | | | | | | | | Bring back <libmaple/i2c.h> support on STM32F1 with a view towards how it'll be implemented on STM32F2. There are still many F1-isms in libmaple/i2c.c and <libmaple/i2c.h>, to be dealt with subsequently. Move device declarations and base pointer definitions to a new F1 <series/i2c.h>. The register maps and bit definitions themselves are identical on both series, so leave them in the libmaple header. Add i2c_private.h, which contains: - I2C_DEV(), a convenience macro for defining an i2c_dev, and - declarations for the event and error IRQ handlers. The IRQ handlers are large, and I2C is slow anyway, so I see no reason to make them inline in the private header (as we do for some other peripherals). We just expose the existing ones that were formerly static in libmaple/i2c.c, but prefix the names with underscore. Move the device declarations and IRQ handlers into new stm32f1/i2c.c. These use the i2c_private.h API. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple/i2c.c: Cosmetics.Marti Bolivar2012-06-221-2/+0
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Fix a bunch of Doxygen file-level comments.Marti Bolivar2012-05-081-1/+1
| | | | | | | | | | | | | Fix @file in many places. Also fix up the descriptions where it's appropriate. This standardizes the @file formatting across the library to explicitly include any parent directories up to the repository root. Besides being nice, this will hopefully let us manage Doxygen's XML output so as to make extracting series-specific pieces via Breathe in the leaflabs-docs repo possible. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Move public headers to include directories; related cleanups.Marti Bolivar2012-04-111-7/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move libmaple/*.h to (new) libmaple/include/libmaple/. The new accepted way to include a libmaple header foo.h is with: #include <libmaple/foo.h> This is more polite in terms of the include namespace. It also allows us to e.g. implement the Arduino SPI library at all (which has header SPI.h; providing it was previously impossible on case-insensitive filesystems due to libmaple's spi.h). Similarly for Wirish. The old include style (#include "header.h") is now deprecated. libmaple/*.h: - Change include guard #defines from _FOO_H_ to _LIBMAPLE_FOO_H_. - Add license headers where they're missing - Add conditional extern "C" { ... } blocks where they're missing (they aren't always necessary, but we might was well do it against the future, while we're at it.). - Change includes from #include "foo.h" to #include <libmaple/foo.h>. - Move includes after extern "C". - Remove extra trailing newlines Note that this doesn't include the headers under libmaple/usb/ or libmaple/usb/usb_lib. These will get fixed later. libmaple/*.c: - Change includes from #include "foo.h" to #include <libmaple/foo.h>. Makefile: - Add I$(LIBMAPLE_PATH)/include/libmaple to GLOBAL_FLAGS. This allows for users (including Wirish) to migrate their code, but should go away ASAP, since it slows down compilation. Wirish: - Move wirish/**/*.h to (new) wirish/include/wirish/. This ignores the USB headers, which, as usual, are getting handled after everything else. - Similarly generify wirish/boards/ structure. For each supported board "foo", move wirish/boards/foo.h and wirish/boards/foo.cpp to wirish/boards/foo/include/board/board.h and wirish/boards/foo/board.cpp, respectively. Also remove the #ifdef hacks around the .cpp files. - wirish/rules.mk: put wirish/boards/foo/include in the include path (and add wirish/boards/foo/board.cpp to the list of sources to be compiled). This allows saying: #include <board/board.h> instead of the hack currently in place. We can allow the user to override this setting later to make adding custom board definitions easier. - Disable -Werror in libmaple/rules.mk, as the current USB warnings don't let the olimex_stm32_h103 board compile. We can re-enable -Werror once we've moved the board-specific bits out of libmaple proper. libraries, examples: - Update includes accordingly. - Miscellaneous cosmetic fixups. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Update outdated stm32.h usages.Marti Bolivar2011-09-071-4/+4
| | | | | stm32.h has been updated to prefix its definitions. Update the rest of libmaple to take this into account.
* i2c: Renaming, type changes, exposing i2c_init(), documentation.Marti Bolivar2011-05-191-44/+52
| | | | | | | | | | | | | | | | | Changes to struct i2c_dev members: - uint8 clk_line's type is changing and is being renamed, is now rcc_clk_id clk_id - uint8 ev_nvic_line's type is changing to nvic_irq_num - uint8 er_nvic_line's type is changing to nvic_irq_num Previous names were badly typed and inconsistent with the rest of libmaple. Exposing i2c_init(), also for consistency. Adding/editing many Doxygen comments, for documentation and general housekeeping.
* libmaple: Fix warnings in libmaple source filesPerry Hung2011-05-121-7/+5
| | | | | -Add -Wall, -Werror to libmaple/* -Fix warnings
* i2c: Various fixes, extensions, documentation.Perry Hung2011-05-121-57/+170
| | | | | | | | | | | | -Fix clock calculations for fast-mode support -Add I2C_REMAP option to remap i2c1 (untested) -Add I2C_BUS_RESET option to reset bus on initialization -Add optional timeout parameter -Doxygen comments -Various cleanup 10-bit slave addressing is untested until I have a device that speaks such.
* I2C fixup.Marti Bolivar2011-04-251-4/+13
| | | | Added i2c_init() for consistency with rest of libmaple.
* i2c cleanups.Marti Bolivar2011-04-141-28/+27
| | | | Whitespace and column width changes only.
* Making 1c05ac8497222a12a675ba31564e7c4864107de9 comply with coding standard.Marti Bolivar2011-04-121-6/+5
| | | | Whitespace corrections only.
* Adding i2c2 and i2c fast modeAnton Eltchaninov2011-04-121-11/+43
| | | | Signed-off-by: Anton Eltchaninov <anton.eltchaninov@gmail.com>
* Merge branch 'i2c-wip' into refactorPerry Hung2011-03-211-6/+6
| | | | | | | Conflicts: examples/test-fsmc.cpp libmaple/rules.mk wirish/boards.h
* Add rudimentary error handling for nack conditionPerry Hung2011-03-141-28/+23
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* Fix merge error and compile error.Perry Hung2011-03-111-129/+39
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* Rename i2c irq handler to new naming convention.Perry Hung2011-03-011-1/+1
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* checkpointPerry Hung2011-02-261-0/+502
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