118 lines
3.4 KiB
C
118 lines
3.4 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2017 Glenn Ruben Bakke
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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
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* THE SOFTWARE.
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*/
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#ifndef HAL_TWI_H__
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#define HAL_TWI_H__
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#include <stdbool.h>
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#include "nrf.h"
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#define TWI_BASE_POINTERS (const uint32_t[]){NRF_TWI0_BASE, NRF_TWI1_BASE}
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#define TWI_BASE(x) ((NRF_TWI_Type *)TWI_BASE_POINTERS[x])
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#if NRF51
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#define TWI_IRQ_VALUES (const uint32_t[]){SPI0_TWI0_IRQn, SPI1_TWI1_IRQn}
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#elif NRF52
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#define TWI_IRQ_VALUES (const uint32_t[]){SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQn, \
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SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1_IRQn}
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#endif
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#if NRF52
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/**
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* @brief TWIM Configuration Structure definition
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*/
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typedef struct {
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} hal_twim_init_t;
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/**
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* @brief TWIS Configuration Structure definition
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*/
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typedef struct {
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} hal_twis_init_t;
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#endif
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/**
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* @brief TWI clock frequency type definition
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*/
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typedef enum {
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HAL_TWI_FREQ_100_Kbps = 0,
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HAL_TWI_FREQ_250_Kbps,
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HAL_TWI_FREQ_400_Kbps
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} hal_twi_clk_freq_t;
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/**
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* @brief TWI role type definition
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*/
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typedef enum {
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HAL_TWI_MASTER,
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HAL_TWI_SLAVE
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} hal_twi_role_t;
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/**
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* @brief TWI Configuration Structure definition
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*/
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typedef struct {
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uint8_t id; /* TWI instance id */
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const pin_obj_t * scl_pin; /* TWI SCL pin */
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const pin_obj_t * sda_pin; /* TWI SDA pin */
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hal_twi_role_t role; /* TWI master/slave */
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hal_twi_clk_freq_t freq; /* TWI frequency */
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} hal_twi_init_t;
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/**
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* @brief TWI handle Structure definition
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*/
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typedef struct __TWI_HandleTypeDef
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{
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NRF_TWI_Type *instance; /* TWI register base address */
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hal_twi_init_t init; /* TWI initialization parameters */
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} TWI_HandleTypeDef;
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void hal_twi_master_init(NRF_TWI_Type * p_instance, hal_twi_init_t const * p_twi_init);
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void hal_twi_master_tx(NRF_TWI_Type * p_instance,
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uint8_t addr,
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uint16_t transfer_size,
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const uint8_t * tx_data,
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bool stop);
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void hal_twi_master_rx(NRF_TWI_Type * p_instance,
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uint8_t addr,
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uint16_t transfer_size,
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const uint8_t * rx_data);
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void hal_twi_slave_init(NRF_TWI_Type * p_instance, hal_twi_init_t const * p_twi_init);
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#endif // HAL_TWI_H__
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