nrf51_spi_master_config.h

00001 /* Copyright (c) 2012 Nordic Semiconductor. All Rights Reserved.
00002  *
00003  * The information contained herein is property of Nordic Semiconductor ASA.
00004  * Terms and conditions of usage are described in detail in NORDIC
00005  * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
00006  *
00007  * Licensees are granted free, non-transferable use of the information. NO
00008  * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
00009  * the file.
00010  *
00011  */
00012 #ifndef SPI_MASTER_CONFIG_H
00013 #define SPI_MASTER_CONFIG_H
00014 
00015 #define SPI_OPERATING_FREQUENCY_8M  ( 0x02000000UL << (uint32_t)Freq_8Mbps )  /*!< Slave clock frequency. */
00016 #define SPI_OPERATING_FREQUENCY_4M  ( 0x02000000UL << (uint32_t)Freq_4Mbps )  /*!< Slave clock frequency. */
00017 #define SPI_OPERATING_FREQUENCY_1M  ( 0x02000000UL << (uint32_t)Freq_1Mbps )  /*!< Slave clock frequency. */
00018 
00019 /*  SPI0 */ 
00020                                                                     //modified by Tsungta, SCK/MOSI/MISO are shared
00021 #define SPI_PSELSCK0              11//25//31   /*!< GPIO pin number for SPI clock (note that setting this to 31 will only work for loopback purposes as it not connected to a pin) */
00022 #define SPI_PSELMOSI0             15//24//20   /*!< GPIO pin number for Master Out Slave In    */
00023 #define SPI_PSELMISO0             9//29//22   /*!< GPIO pin number for Master In Slave Out    */
00024 #define SPI_PSELSS0               12//30   /*!< GPIO pin number for Slave Select           */
00025 
00026 /*  SPI1 */
00027 #define SPI_PSELSCK1              11//29   /*!< GPIO pin number for SPI clock              */
00028 #define SPI_PSELMOSI1             15//21   /*!< GPIO pin number for Master Out Slave In    */
00029 #define SPI_PSELMISO1             9//23   /*!< GPIO pin number for Master In Slave Out    */
00030 #define SPI_PSELSS1               12//28   /*!< GPIO pin number for Slave Select           */
00031 
00032 //#define DEBUG
00033 #ifdef DEBUG
00034 #define DEBUG_EVENT_READY_PIN0    10    /*!< when DEBUG is enabled, this GPIO pin is toggled everytime READY_EVENT is set for SPI0, no toggling means something has gone wrong */
00035 #define DEBUG_EVENT_READY_PIN1    11    /*!< when DEBUG is enabled, this GPIO pin is toggled everytime READY_EVENT is set for SPI1, no toggling means something has gone wrong */
00036 #endif
00037 
00038 #define NUMBER_OF_TEST_BYTES     2    /*!< number of bytes to send to slave to test if Initialization was successful */
00039 #define TEST_BYTE                0xBB /*!< Randomly chosen test byte to transmit to spi slave */
00040 #define TIMEOUT_COUNTER          0x3000UL  /*!< timeout for getting rx bytes from slave */
00041 
00042 /** @def  TX_RX_MSG_LENGTH
00043  * number of bytes to transmit and receive. This amount of bytes will also be tested to see that
00044  * the received bytes from slave are the same as the transmitted bytes from the master */
00045 #define TX_RX_MSG_LENGTH   100
00046 
00047 /** @def ERROR_PIN_SPI0
00048  * This pin is set active high when there is an error either in TX/RX for SPI0 or if the received bytes does not totally match the transmitted bytes.
00049  * This functionality can be tested by temporarily disconnecting the MISO pin while running this example.
00050  */
00051 #define ERROR_PIN_SPI0   8UL
00052 
00053 /** @def ERROR_PIN_SPI1
00054  * This pin is set active high when there is an error either in TX/RX for SPI1 or if the received bytes does not totally match the transmitted bytes.
00055  * This functionality can be tested by temporarily disconnecting the MISO pin while running this example.
00056  */
00057 #define ERROR_PIN_SPI1   9UL
00058 
00059 #endif /* SPI_MASTER_CONFIG_H */
00060 
00061