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53 lines
2.5 KiB
C
53 lines
2.5 KiB
C
//
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// Grimoire
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// Copyright 2025 Wenting Zhang
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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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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#pragma once
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// Opaque I2C handler
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typedef struct pal_i2c_t pal_i2c_t;
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extern pal_i2c_t pi2c1;
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void pal_i2c_init(void);
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int pal_i2c_write_byte(pal_i2c_t *i2c, uint8_t addr, uint8_t val);
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int pal_i2c_write_reg(pal_i2c_t *i2c, uint8_t addr, uint8_t reg, uint8_t val);
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int pal_i2c_write_longreg(pal_i2c_t *i2c, uint8_t addr, uint8_t reg, uint8_t *payload, size_t len);
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int pal_i2c_write_payload(pal_i2c_t *i2c, uint8_t addr, uint8_t *payload, size_t len);
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int pal_i2c_read_reg(pal_i2c_t *i2c, uint8_t addr, uint8_t reg, uint8_t *val);
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int pal_i2c_read_payload(pal_i2c_t *i2c, uint8_t addr, uint8_t *tx_payload, size_t tx_len, uint8_t *rx_payload, size_t rx_len);
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int pal_i2c_read_byte(pal_i2c_t *i2c, uint8_t addr, uint8_t *val);
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bool pal_i2c_ping(pal_i2c_t *i2c, uint8_t addr);
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// LL functions:
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#define REQ_NONE LL_I2C_GENERATE_NOSTARTSTOP
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#define REQ_WRITE LL_I2C_GENERATE_START_WRITE
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#define REQ_READ LL_I2C_GENERATE_START_READ
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#define REQ_RESTART_READ LL_I2C_GENERATE_RESTART_7BIT_READ
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#define REQ_RELOAD LL_I2C_MODE_RELOAD
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bool pal_i2c_ll_start(pal_i2c_t *i2c, uint32_t request, uint8_t slave_addr, uint8_t transfer_size);
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bool pal_i2c_ll_send(pal_i2c_t *i2c, uint8_t val);
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bool pal_i2c_ll_recv(pal_i2c_t *i2c, uint8_t *val);
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void pal_i2c_ll_stop(pal_i2c_t *i2c);
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void pal_i2c_ll_lock(pal_i2c_t *i2c);
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void pal_i2c_ll_unlock(pal_i2c_t *i2c);
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