mirror of
https://github.com/mruby/mruby
synced 2026-06-08 16:11:16 +00:00
Yukihiro "Matz" Matsumoto
1ed52461e8
Add three new gems for I2C communication: - hw-i2c: common Ruby API, C bindings, and HAL header - hw-esp32-i2c: ESP32 HAL using ESP-IDF I2C master driver - hw-rp2040-i2c: RP2040 HAL using Pico SDK The HAL API provides init, read, write, and atomic write_read (repeated START) operations. Platform gems depend on hw-i2c and are only compiled when explicitly included in build config. Co-authored-by: Claude <noreply@anthropic.com>
32 lines
879 B
C
32 lines
879 B
C
#ifndef MRUBY_I2C_H
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#define MRUBY_I2C_H
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#include <stdint.h>
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#include <stddef.h>
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#include <stdbool.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef enum {
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MRB_I2C_OK = 0,
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MRB_I2C_ERROR_UNIT = -1,
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MRB_I2C_ERROR_TIMEOUT = -2,
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MRB_I2C_ERROR_NACK = -3,
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} mrb_i2c_status;
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/* HAL functions - implemented by hw-<platform>-i2c gems */
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mrb_i2c_status mrb_i2c_init(int unit, uint32_t freq, int8_t sda, int8_t scl);
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int mrb_i2c_read(int unit, uint8_t addr, uint8_t *dst, size_t len, uint32_t timeout_us);
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int mrb_i2c_write(int unit, uint8_t addr, const uint8_t *src, size_t len, uint32_t timeout_us);
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int mrb_i2c_write_read(int unit, uint8_t addr, const uint8_t *src, size_t wlen,
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uint8_t *dst, size_t rlen, uint32_t timeout_us);
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int mrb_i2c_unit_name_to_num(const char *name);
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#ifdef __cplusplus
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}
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#endif
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#endif /* MRUBY_I2C_H */
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