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#include "gd32f30x.h"
#include "gd32f307c_eval.h"
#define arraysize 10
void rcu_config(void);
void gpio_config(void);
void dma_config(void);
void spi_config(void);
/*!
\brief main function
\param[in] none
\param[out] none
\retval none
*/
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_config();
/* DMA config */
dma_config();
/* SPI config */
spi_config();
/* SPI ti mode enable */
spi_ti_mode_enable(SPI2);
spi_ti_mode_enable(SPI0);
/* SPI enable */
spi_enable(SPI2);
spi_enable(SPI0);
/* DMA channel enable */
dma_channel_enable(DMA0, DMA_CH1);
dma_channel_enable(DMA0, DMA_CH2);
dma_channel_enable(DMA1, DMA_CH0);
dma_channel_enable(DMA1, DMA_CH1);
/* SPI DMA enable */
spi_dma_enable(SPI2, SPI_DMA_TRANSMIT);
spi_dma_enable(SPI2, SPI_DMA_RECEIVE);
spi_dma_enable(SPI0, SPI_DMA_TRANSMIT);
spi_dma_enable(SPI0, SPI_DMA_RECEIVE);
/* wait dma transmit complete */
while(!dma_flag_get(DMA0,DMA_CH2,DMA_INTF_FTFIF));
while(!dma_flag_get(DMA1,DMA_CH1,DMA_INTF_FTFIF));
while(!dma_flag_get(DMA1,DMA_CH0,DMA_INTF_FTFIF));
while(!dma_flag_get(DMA0,DMA_CH1,DMA_INTF_FTFIF));
/* 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_led_off(LED3);
while(1);
}
void rcu_config(void)
{
rcu_periph_clock_enable(RCU_GPIOA);
rcu_periph_clock_enable(RCU_GPIOB);
rcu_periph_clock_enable(RCU_GPIOC);
rcu_periph_clock_enable(RCU_DMA0);
rcu_periph_clock_enable(RCU_DMA1);
rcu_periph_clock_enable(RCU_SPI0);
rcu_periph_clock_enable(RCU_SPI2);
rcu_periph_clock_enable(RCU_AF);
}
void gpio_config(void)
{
/* JTAG-DP disabled and SW-DP enabled, so SPI0 can use PB3 and PB4 */
gpio_pin_remap_config(GPIO_SWJ_SWDPENABLE_REMAP,ENABLE);
gpio_pin_remap_config(GPIO_SPI0_REMAP, ENABLE);
/* SPI0 GPIO config: NSS/PA15, SCK/PB3, MOSI/PB5 */
gpio_init(GPIOA, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_15);
gpio_init(GPIOB, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_3 | GPIO_PIN_5);
/* SPI0 GPIO config: MISO/PB4 */
gpio_init(GPIOB, GPIO_MODE_IN_FLOATING, GPIO_OSPEED_50MHZ, GPIO_PIN_4);
gpio_pin_remap_config(GPIO_SPI2_REMAP, ENABLE);
/* SPI2 GPIO config: NSS/PA4 */
gpio_init(GPIOA, GPIO_MODE_IN_FLOATING, GPIO_OSPEED_50MHZ, GPIO_PIN_4);
/* SPI2 GPIO config: SCK/PC10, MOSI/PC12 */
gpio_init(GPIOC, GPIO_MODE_IN_FLOATING, GPIO_OSPEED_50MHZ, GPIO_PIN_10 |GPIO_PIN_12);
/* SPI2 GPIO config: MISO/PC11 */
gpio_init(GPIOC, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_11);
}
void dma_config(void)
{
dma_parameter_struct dma_init_struct;
/* SPI0 transmit dma config:DMA0-DMA_CH2 */
dma_deinit(DMA0, DMA_CH2);
dma_init_struct.periph_addr = (uint32_t)&SPI_DATA(SPI0);
dma_init_struct.memory_addr = (uint32_t)spi0_send_array;
dma_init_struct.direction = DMA_MEMORY_TO_PERIPHERAL;
dma_init_struct.memory_width = DMA_MEMORY_WIDTH_8BIT;
dma_init_struct.periph_width = DMA_PERIPHERAL_WIDTH_8BIT;
dma_init_struct.priority = DMA_PRIORITY_LOW;
dma_init_struct.number = arraysize;
dma_init_struct.periph_inc = DMA_PERIPH_INCREASE_DISABLE;
dma_init_struct.memory_inc = DMA_MEMORY_INCREASE_ENABLE;
dma_init(DMA0, DMA_CH2, &dma_init_struct);
/* configure DMA mode */
dma_circulation_disable(DMA0, DMA_CH2);
dma_memory_to_memory_disable(DMA0, DMA_CH2);
/* SPI0 receive dma config:DMA0-DMA_CH1 */
dma_deinit(DMA0, DMA_CH1);
dma_init_struct.periph_addr = (uint32_t)&SPI_DATA(SPI0);
dma_init_struct.memory_addr = (uint32_t)spi0_receive_array;
dma_init_struct.direction = DMA_PERIPHERAL_TO_MEMORY;
dma_init_struct.priority = DMA_PRIORITY_HIGH;
dma_init(DMA0, DMA_CH1, &dma_init_struct);
/* configure DMA mode */
dma_circulation_disable(DMA0, DMA_CH1);
dma_memory_to_memory_disable(DMA0, DMA_CH1);
/* SPI2 transmit dma config:DMA1,DMA_CH1 */
dma_deinit(DMA1, DMA_CH1);
dma_init_struct.periph_addr = (uint32_t)&SPI_DATA(SPI2);
dma_init_struct.memory_addr = (uint32_t)spi2_send_array;
dma_init_struct.direction = DMA_MEMORY_TO_PERIPHERAL;
dma_init_struct.priority = DMA_PRIORITY_MEDIUM;
dma_init(DMA1, DMA_CH1, &dma_init_struct);
/* configure DMA mode */
dma_circulation_disable(DMA1, DMA_CH1);
dma_memory_to_memory_disable(DMA1, DMA_CH1);
/* SPI2 receive dma config:DMA1,DMA_CH0 */
dma_deinit(DMA1, DMA_CH0);
dma_init_struct.periph_addr = (uint32_t)&SPI_DATA(SPI2);
dma_init_struct.memory_addr = (uint32_t)spi2_receive_array;
dma_init_struct.direction = DMA_PERIPHERAL_TO_MEMORY;
dma_init_struct.priority = DMA_PRIORITY_ULTRA_HIGH;
dma_init(DMA1, DMA_CH0, &dma_init_struct);
/* configure DMA mode */
dma_circulation_disable(DMA1, DMA_CH0);
dma_memory_to_memory_disable(DMA1, DMA_CH0);
}
void spi_config(void)
{
spi_parameter_struct spi_init_struct;
/* SPI0 parameter config */
spi_init_struct.trans_mode = SPI_TRANSMODE_FULLDUPLEX;
spi_init_struct.device_mode = SPI_MASTER;
spi_init_struct.frame_size = SPI_FRAMESIZE_8BIT;
spi_init_struct.clock_polarity_phase = SPI_CK_PL_HIGH_PH_2EDGE;
spi_init_struct.nss = SPI_NSS_HARD;
spi_init_struct.prescale = SPI_PSC_16;
spi_init_struct.endian = SPI_ENDIAN_MSB;
spi_init(SPI0, &spi_init_struct);
/* SPI2 parameter config */
spi_init_struct.trans_mode = SPI_TRANSMODE_FULLDUPLEX;
spi_init_struct.device_mode = SPI_SLAVE;
spi_init_struct.nss = SPI_NSS_HARD;
spi_init_struct.prescale = SPI_PSC_16;
spi_init(SPI2, &spi_init_struct);
}
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