//配置UBLOX NEO-6的更新速率
//measrate:测量时间间隔，单位为ms，最少不能小于200ms（5Hz）
//reftime:参考时间，0=UTC Time；1=GPS Time（一般设置为1）
void Ublox_Cfg_Rate(u16 measrate, u8 reftime)
{
u8 USART_TX_BUF[0xff];
_ublox_cfg_rate *cfg_rate = (_ublox_cfg_rate *)USART_TX_BUF;
if (measrate < 200)return; //小于200ms，直接退出
cfg_rate->header = 0X62B5; //cfg header
cfg_rate->id = 0X0806; //cfg rate id
cfg_rate->dlength = 6; //数据区长度为6个字节.
cfg_rate->measrate = measrate; //脉冲间隔,us
cfg_rate->navrate = 1; //导航速率（周期），固定为1
cfg_rate->timeref = reftime; //参考时间为GPS时间
Ublox_CheckSum((u8 *)(&cfg_rate->id), sizeof(_ublox_cfg_rate) - 4, &cfg_rate->cka, &cfg_rate->ckb);
Sys_sPrintf(GPS_USART, USART_TX_BUF, sizeof(_ublox_cfg_tp));
USART_DMA_Enable(GPS_USART, sizeof(_ublox_cfg_rate)); //通过dma发送出去
}
//配置UBLOX NEO-6的时钟脉冲输出
//interval:脉冲间隔
//length:脉冲宽度
//status:脉冲配置:1,高电平有效;0,关闭;-1,低电平有效.
void Ublox_Cfg_Tp(u32 interval, u32 length, signed char status)
{
u8 USART_TX_BUF[0xff];
_ublox_cfg_tp *cfg_tp = (_ublox_cfg_tp *)USART_TX_BUF;
cfg_tp->header = 0X62B5; //cfg header
cfg_tp->id = 0X0706; //cfg tp id
cfg_tp->dlength = 20; //数据区长度为20个字节.
cfg_tp->interval = interval;//脉冲间隔,us
cfg_tp->length = length; //脉冲宽度,us
cfg_tp->status = status; //时钟脉冲配置
cfg_tp->timeref = 0; //参考UTC 时间
cfg_tp->flags = 0; //flags为0
cfg_tp->reserved = 0; //保留位为0
cfg_tp->antdelay = 820; //天线延时为820ns
cfg_tp->rfdelay = 0; //RF延时为0ns
cfg_tp->userdelay = 0; //用户延时为0ns
Ublox_CheckSum((u8 *)(&cfg_tp->id), sizeof(_ublox_cfg_tp) - 4, &cfg_tp->cka, &cfg_tp->ckb);
Sys_sPrintf(GPS_USART, USART_TX_BUF, sizeof(_ublox_cfg_tp));
USART_DMA_Enable(GPS_USART, sizeof(_ublox_cfg_tp)); //通过dma发送出去
}
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/* System Clocks Configuration */
RCC_Configuration();
/* NVIC configuration */
NVIC_Configuration();
/* LED configuration */
LED_config();
GD_EVAL_LEDOn(LED1);
GD_EVAL_LEDOn(LED3);
/* USART configuration */
USART_Configuration();
#ifdef GD32F130_150
/* DMA1 channel2 configuration */
DMA_DeInit(DMA1_CHANNEL2);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)0x40013828;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)SRC_Const_Buffer;
DMA_InitStructure.DMA_DIR = DMA_DIR_PERIPHERALDST;
DMA_InitStructure.DMA_BufferSize = BufferSize;
DMA_InitStructure.DMA_MemoryInc = DMA_MEMORYINC_ENABLE;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PERIPHERALDATASIZE_BYTE;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MEMORYDATASIZE_BYTE;
DMA_InitStructure.DMA_PeripheralInc = DMA_PERIPHERALINC_DISABLE;
DMA_InitStructure.DMA_Mode = DMA_MODE_NORMAL;
DMA_InitStructure.DMA_Priority = DMA_PRIORITY_VERYHIGH;
DMA_InitStructure.DMA_MTOM = DMA_MEMTOMEM_DISABLE;
DMA_Init(DMA1_CHANNEL2, &DMA_InitStructure);
USART_DMA_Enable(USART1, USART_DMAREQ_TX, ENABLE);
DMA_INTConfig(DMA1_CHANNEL2, DMA_INT_TC, ENABLE);
/* Enable DMA transfer */
DMA_Enable(DMA1_CHANNEL2, ENABLE);
#elif defined GD32F170_190
/* DMA1 channel2 configuration */
DMA_DeInit(DMA1_CHANNEL4);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)0x40004428;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)SRC_Const_Buffer;
DMA_InitStructure.DMA_DIR = DMA_DIR_PERIPHERALDST;
DMA_InitStructure.DMA_BufferSize = BufferSize;
DMA_InitStructure.DMA_MemoryInc = DMA_MEMORYINC_ENABLE;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PERIPHERALDATASIZE_BYTE;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MEMORYDATASIZE_BYTE;
DMA_InitStructure.DMA_PeripheralInc = DMA_PERIPHERALINC_DISABLE;
DMA_InitStructure.DMA_Mode = DMA_MODE_NORMAL;
DMA_InitStructure.DMA_Priority = DMA_PRIORITY_VERYHIGH;
DMA_InitStructure.DMA_MTOM = DMA_MEMTOMEM_DISABLE;
DMA_Init(DMA1_CHANNEL4, &DMA_InitStructure);
USART_DMA_Enable(USART2, USART_DMAREQ_TX, ENABLE);
DMA_INTConfig(DMA1_CHANNEL4, DMA_INT_TC, ENABLE);
/* Enable DMA transfer */
DMA_Enable(DMA1_CHANNEL4, ENABLE);
#endif
/* Waiting for the transfer to complete*/
while(count == 0)
{
}
GD_EVAL_LEDOff(LED1);
GD_EVAL_LEDOff(LED3);
GD_EVAL_LEDOn(LED2);
GD_EVAL_LEDOn(LED4);
while(1)
{
}
}
