mirror of
https://github.com/xtacocorex/CHIP_IO
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92 lines
3.4 KiB
C
92 lines
3.4 KiB
C
/*
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Copyright (c) 2016 Robert Wolterman
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Original BBIO Author Justin Cooper
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Modified for CHIP_IO Author Robert Wolterman
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This file incorporates work covered by the following copyright and
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permission notice, all modified code adopts the original license:
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Copyright (c) 2013 Adafruit
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Original RPi.GPIO Author Ben Croston
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Modified for BBIO Author Justin Cooper
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This file incorporates work covered by the following copyright and
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permission notice, all modified code adopts the original license:
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Copyright (c) 2013 Ben Croston
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Permission is hereby granted, free of charge, to any person obtaining a copy of
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this software and associated documentation files (the "Software"), to deal in
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the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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of the Software, and to permit persons to whom the Software is furnished to do
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so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
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// See http://blog.geeky-boy.com/2016/06/of-compiler-warnings-and-asserts-in.html
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#define ASSRT(cond_expr) do { \
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if (!(cond_expr)) { \
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fprintf(stderr, "ASSRT failed at %s:%d (%s)", __FILE__, __LINE__, #cond_expr); \
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fflush(stderr); \
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abort(); \
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} } while (0)
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// See http://blog.geeky-boy.com/2016/06/snprintf-bug-detector-or-bug-preventer.html
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#define BUF2SMALL(b) do {\
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ASSRT(strnlen(b, sizeof(b)) < sizeof(b)-1);\
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} while (0)
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#define MODE_UNKNOWN -1
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#define BOARD 10
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#define BCM 11
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// In the pins_t structure, the "base_method" field tells how
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// the "gpio" field should be interpreted.
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#define BASE_METHOD_AS_IS 1 /* use the gpio value directly */
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#define BASE_METHOD_XIO 2 /* add the gpio value to the XIO base */
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typedef struct pins_t {
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const char *name;
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const char *key;
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int gpio; /* port number to use under /sys/class/gpio */
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int base_method; /* modifier for port number; see BASE_METHOD_... */
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int pwm_mux_mode;
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int ain;
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} pins_t;
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#define FILENAME_BUFFER_SIZE 128
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int setup_error;
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int module_setup;
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int get_xio_base(void);
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int lookup_gpio_by_key(const char *key);
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int lookup_gpio_by_name(const char *name);
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int lookup_ain_by_key(const char *key);
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int lookup_ain_by_name(const char *name);
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int copy_key_by_key(const char *input_key, char *key);
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int copy_pwm_key_by_key(const char *input_key, char *key);
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int get_key_by_name(const char *name, char *key);
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int get_pwm_key_by_name(const char *name, char *key);
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int get_gpio_number(const char *key, unsigned int *gpio);
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int get_key(const char *input, char *key);
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int get_pwm_key(const char *input, char *key);
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int get_adc_ain(const char *key, unsigned int *ain);
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int build_path(const char *partial_path, const char *prefix, char *full_path, size_t full_path_len);
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int get_spi_bus_path_number(unsigned int spi);
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