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* Add STM32F2 I2C support.Marti Bolivar2014-11-241-13/+2
| | | | | | | Untested, but fixes the build and at least provides the correct register map and base pointers. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Revert "- tx and rx callbacks for each module"Marti Bolivar2014-01-101-52/+0
| | | | | | | | 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 Bolivar2014-01-101-10/+3
| | | | | | | | 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 Bolivar2014-01-101-1/+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/+1
| | | | | | | | | | 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 Carter2012-09-041-3/+10
| | | | | | | | | | 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 Carter2012-09-031-0/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - 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>
* <libmaple/i2c.h>: Add I2C_CCR_DUTY bit value definitions.Marti Bolivar2012-06-221-1/+3
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* I2C: Deprecate I2C_REMAP flag.Marti Bolivar2012-06-221-1/+1
| | | | | | | | 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 Bolivar2012-06-221-0/+18
| | | | | | | | | 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>
* I2C: Add i2c_config_gpios(), i2c_master_release_bus().Marti Bolivar2012-06-221-0/+25
| | | | | | These are necessary to pull out some calls to gpio_set_mode(). Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* <libmaple/i2c.h>: Fix Doxygen.Marti Bolivar2012-06-221-3/+3
| | | | | | | Existing Doxygen was commenting I2C_IRQ_ERROR instead of i2c_enable_irq(), as desired. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple/i2c.h: Better comments.Marti Bolivar2012-06-221-2/+16
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* <libmaple/i2c.h>: Move low-level routines to end of file.Marti Bolivar2012-06-221-71/+73
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* I2C: Fix Doxygen F1-isms.Marti Bolivar2012-06-221-3/+6
| | | | | | | | I'm not sure these functions should even exist in their present form,, but I don't understand the code well enough to make a real fix. For now, just replace references to RM0008 with "chip reference manual". Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* i2c_set_input_clk(): fix an F1-ism.Marti Bolivar2012-06-221-1/+16
| | | | | | | | | | | | | | | i2c_set_input_clk()'s documentation says that the maximum peripheral clock frequency is 36 MHz, but that's a hard-coded magic number. The actual limit is the device's APB frequency or 46 MHz, whichever is lower (F2 and F4 share the 46 MHz limit). Fix the documentation to reflect that fact, and add an internal series-provided function to get the maximum clock frequency for a device. To help users porting to F2, have i2c_set_input_clk() assert-check that the provided frequency is less than that maximum value and the hard 46 MHz limit. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Move i2c_dev and i2c_state into new i2c_common.h.Marti Bolivar2012-06-221-27/+2
| | | | | | | This is necessary to add series-specific infrastructure to clean up some F1-isms in <libmaple/i2c.h>'s inline functions. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple/i2c.h: Cosmetics.Marti Bolivar2012-06-221-1/+4
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* I2C: Restore on F1, refactoring prep for F2.Marti Bolivar2012-06-221-16/+1
| | | | | | | | | | | | | | | | | | | | | | | | | 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.h>: Cosmetics.Marti Bolivar2012-06-221-6/+6
| | | | | | Put CCR definitions after SR2, to keep them in register map order. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* <libmaple/i2c.h>: Cosmetics.Marti Bolivar2012-06-221-20/+20
| | | | | | | Reorder register bit definitions by descending bit number, for consistency with the rest of the library. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* <libmaple/i2c.h>: Add missing register bit defns.Marti Bolivar2012-06-221-0/+22
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple/i2c.h: Assert LeafLabs copyright.Marti Bolivar2012-06-221-0/+1
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Fix I2C_CR2_FREQ bit definition.Marti Bolivar2012-06-221-1/+1
| | | | | | The existing value clobbers the entire register. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple/i2c.h: Cosmetics.Marti Bolivar2012-06-221-1/+1
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* libmaple/i2c.h: Don't use BIT().Marti Bolivar2012-06-221-40/+40
| | | | 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>
* libmaple/i2c.h: Rearrange i2c_dev members to improve packing.Marti Bolivar2012-04-111-5/+5
| | | | Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
* Move public headers to include directories; related cleanups.Marti Bolivar2012-04-111-0/+348
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>
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