1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 /* 39 * hal_em9304_spi.h 40 * 41 * Hardware Abstraction Layer for EM9304 connected via SPI with additional RDY Interrupt line 42 * 43 */ 44 #ifndef __HAL_EM9304_SPI_H 45 #define __HAL_EM9304_SPI_H 46 47 #include <stdint.h> 48 49 #if defined __cplusplus 50 extern "C" { 51 #endif 52 53 /* API_START */ 54 55 /** 56 * @brief Initialize SPI 57 */ 58 void hal_em9304_spi_init(void); 59 60 /** 61 * @brief Set callback for RDY - can be called from ISR context 62 * @param callback 63 */ 64 void hal_em9304_spi_set_ready_callback(void (*callback)(void)); 65 66 /** 67 * @brief Set callback for transfer complete - can be called from ISR context 68 * @param callback 69 */ 70 void hal_em9304_spi_set_transfer_done_callback(void (*callback)(void)); 71 72 /** 73 * @brief Enable READY IRQ 74 */ 75 void hal_em9304_spi_enable_ready_interrupt(void); 76 77 /** 78 * @brief Disable READY IRQ 79 */ 80 void hal_em9304_spi_disable_ready_interrupt(void); 81 82 /** 83 * @brief Poll READY state 84 */ 85 int hal_em9304_spi_get_ready(); 86 87 /** 88 * @brief Set Chip Selet 89 * @param enable 90 */ 91 void hal_em9304_spi_set_chip_select(int enable); 92 93 /** 94 * @brief Check if full duplex operation via hal_em9304_spi_transceive is supported 95 */ 96 int hal_em9304_spi_fullduplex_support(void); 97 98 /** 99 * @brief Transmit and Receive bytes via SPI 100 * @param tx_data buffer to transmit 101 * @param rx_data buffer to receive into 102 * @param len 103 */ 104 void hal_em9304_spi_transceive(const uint8_t * tx_data, uint8_t * rx_data, uint16_t len); 105 106 /** 107 * @brief Transmit bytes via SPI 108 * @param tx_data buffer to transmit 109 * @param len 110 */ 111 void hal_em9304_spi_transmit(const uint8_t * tx_data, uint16_t len); 112 113 /** 114 * @brief Receive bytes via SPI 115 * @param rx_data buffer to receive into 116 * @param len 117 */ 118 void hal_em9304_spi_receive(uint8_t * rx_data, uint16_t len); 119 120 /* API_END */ 121 122 #if defined __cplusplus 123 } 124 #endif 125 126 #endif // __HAL_EM9304_SPI_H 127