主机SPI0无法接收到从机SPI2数据反之能够.docx

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1、主机SPI0无法接收到从机SPI2数据，反之能够file main.c briefSPI fullduplex communication use polling mode version 2017-02-10, V1.0.0, firmware for GD32F30x version 2018-10-10, V1.1.0, firmware for GD32F30x version 2018-12-25, V2.0.0, firmware for GD32F30x version 2020-09-30, V2.1.0, firmware for GD32F30x */* Copyright

2、 (c) 2020, GigaDevice Semiconductor Inc. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following

3、disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of the copyright holder nor the names of its contributors may

4、be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIEDWARRANTIES OF MERCHANTABILITY AND FI

5、TNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUTNOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, ORPROFITS; O

6、R BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITYOF SUCH DAMAGE.*/#include gd32f30x.h#include gd32f307c_eval.h

7、#define arraysize10#define SET_SPI0_NSS_HIGH gpio_bit_set(GPIOA,GPIO_PIN_4);#define SET_SPI0_NSS_LOWgpio_bit_reset(GPIOA,GPIO_PIN_4);#define SET_SPI2_NSS_HIGH gpio_bit_set(GPIOA,GPIO_PIN_15);#define SET_SPI2_NSS_LOWgpio_bit_reset(GPIOA,GPIO_PIN_15);uint32_t send_n = 0, receive_n = 0;uint8_t spi0_sen

8、d_arrayarraysize = 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA;uint8_t spi2_send_arrayarraysize = 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA;uint8_t spi0_receive_arrayarraysize;uint8_t spi2_receive_arrayarraysize;ErrStatus memory_compare(uint8_t* src, uint8_t* dst, uin

9、t8_t length);void rcu_config(void);void gpio_config(void);void spi_config(void);/*! brief main function paramin none paramout none retvalnone */int main(void) /* init led2 and led3 */ gd_eval_led_init(LED2); gd_eval_led_init(LED3); /* peripheral clock enable */ rcu_config(); /* GPIO config */ gpio_c

10、onfig(); /* SPI config */ spi_config(); SET_SPI0_NSS_HIGH /* SPI enable */ spi_enable(SPI2); spi_enable(SPI0); SET_SPI0_NSS_LOW /* wait for transmit complete */ while(send_n arraysize) while(RESET = spi_i2s_flag_get(SPI2, SPI_FLAG_TBE); spi_i2s_data_transmit(SPI2, A);/spi2_send_arraysend_n); while(R

11、ESET = spi_i2s_flag_get(SPI0, SPI_FLAG_TBE); spi_i2s_data_transmit(SPI0, spi0_send_arraysend_n+); while(RESET = spi_i2s_flag_get(SPI2, SPI_FLAG_RBNE); spi2_receive_arrayreceive_n = spi_i2s_data_receive(SPI2); while(RESET = spi_i2s_flag_get(SPI0, SPI_FLAG_RBNE); spi0_receive_arrayreceive_n+ = spi_i2s

12、_data_receive(SPI0); SET_SPI0_NSS_HIGH /* compare receive data with send data */ if(memory_compare(spi2_receive_array, spi0_send_array, arraysize) gd_eval_led_on(LED2); else gd_eval_led_off(LED2); if(memory_compare(spi0_receive_array, spi2_send_array, arraysize) gd_eval_led_on(LED3); else gd_eval_le

13、d_off(LED3); while(1); /*! brief configure different peripheral clocks paramin none paramout none retvalnone */void rcu_config(void) rcu_periph_clock_enable(RCU_GPIOA); rcu_periph_clock_enable(RCU_GPIOB); rcu_periph_clock_enable(RCU_SPI0); rcu_periph_clock_enable(RCU_SPI2); rcu_periph_clock_enable(R

14、CU_AF); /*! brief configure the GPIO peripheral paramin none paramout none retvalnone */void gpio_config(void) /* SPI0 GPIO config:SCK/PA5, MISO/PA6, MOSI/PA7 */ gpio_init(GPIOA, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_5 | GPIO_PIN_7); gpio_init(GPIOA, GPIO_MODE_IN_FLOATING, GPIO_OSPEED_50MHZ,

15、GPIO_PIN_6); /* PA3 as NSS */ gpio_init(GPIOA, GPIO_MODE_OUT_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_4); /* SPI2 GPIO config: NSS/PA4, SCK/PC10, MISO/PC11, MOSI/PC12 */ gpio_init(GPIOB, GPIO_MODE_IN_FLOATING, GPIO_OSPEED_50MHZ, GPIO_PIN_3 | GPIO_PIN_5); gpio_init(GPIOB, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, G

16、PIO_PIN_4); gpio_init(GPIOA, GPIO_MODE_IN_FLOATING, GPIO_OSPEED_50MHZ, GPIO_PIN_15); void gpio_config0(void) /* SPI0 GPIO config:SCK/PA5, MISO/PA6, MOSI/PA7 */ gpio_init(GPIOA, GPIO_MODE_IN_FLOATING, GPIO_OSPEED_50MHZ, GPIO_PIN_5 | GPIO_PIN_7); gpio_init(GPIOA, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, GP

17、IO_PIN_6); /* PA3 as NSS */ gpio_init(GPIOA, GPIO_MODE_IN_FLOATING, GPIO_OSPEED_50MHZ, GPIO_PIN_4); /* SPI2 GPIO config: NSS/PA4, SCK/PC10, MISO/PC11, MOSI/PC12 */ gpio_init(GPIOB, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_3 | GPIO_PIN_5); gpio_init(GPIOB, GPIO_MODE_IN_FLOATING, GPIO_OSPEED_50MHZ

18、, GPIO_PIN_4); gpio_init(GPIOA, GPIO_MODE_OUT_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_15); /*! brief configure the SPI peripheral paramin none paramout none retvalnone */void spi_config0(void) spi_parameter_struct spi_init_struct; /* SPI0 parameter config */ spi_init_struct.trans_mode= SPI_TRANSMODE_FULLDUP

19、LEX; spi_init_struct.device_mode = SPI_SLAVE; spi_init_struct.frame_size= SPI_FRAMESIZE_8BIT; spi_init_struct.clock_polarity_phase = SPI_CK_PL_LOW_PH_1EDGE; spi_init_struct.ns= SPI_NSS_HARD; spi_init_struct.prescale = SPI_PSC_256; spi_init_struct.endian= SPI_ENDIAN_MSB; spi_init(SPI0, spi_init_struc

20、t); /* SPI2 parameter config */ spi_init_struct.device_mode = SPI_MASTER; spi_init_struct.ns = SPI_NSS_SOFT; spi_init(SPI2, spi_init_struct); void spi_config(void) spi_parameter_struct spi_init_struct; /* SPI0 parameter config */ spi_init_struct.trans_mode= SPI_TRANSMODE_FULLDUPLEX; spi_init_struct.

21、device_mode = SPI_MASTER; spi_init_struct.frame_size= SPI_FRAMESIZE_8BIT; spi_init_struct.clock_polarity_phase = SPI_CK_PL_LOW_PH_1EDGE; spi_init_struct.ns= SPI_NSS_SOFT; spi_init_struct.prescale = SPI_PSC_256; spi_init_struct.endian= SPI_ENDIAN_MSB; spi_init(SPI0, spi_init_struct); /* SPI2 paramete

22、r config */ spi_init_struct.device_mode = SPI_SLAVE; spi_init_struct.ns = SPI_NSS_HARD; spi_init(SPI2, spi_init_struct); /*! brief memory compare function paramin src: source data pointer paramin dst: destination data pointer paramin length: the compare data length paramout none retvalErrStatus: ERROR or SUCCESS */ErrStatus memory_compare(uint8_t* src, uint8_t* dst, uint8_t length) while (length-) if (*src+ != *dst+) return ERROR; return SUCCESS;