关于CC1310 串口使用uDMA发送数据的问题

嗨：

  最近在使用CC1310做项目，目前还在调试硬件资源阶段，遇到了一些问题，帮忙看看。

void uatr_init();                                                                                                  // this function works well without uDMA

void  dma_init(){

uint32_t status = PRCMPowerDomainStatus(PRCM_DOMAIN_PERIPH); 
if(PRCM_DOMAIN_POWER_ON != status){
      PRCMPowerDomainOn(PRCM_DOMAIN_PERIPH); 
      while(PRCM_DOMAIN_POWER_ON != PRCMPowerDomainStatus(PRCM_DOMAIN_PERIPH));
}
PRCMPeripheralRunEnable(PRCM_PERIPH_UDMA); 
PRCMLoadSet(); 
while(!PRCMLoadGet());
uDMAEnable(UDMA0_BASE); 
uDMAChannelEnable(UDMA0_BASE,UDMA_CHAN_UART0_TX); 

uint8_t buffer[1024];
uDMAControlBaseSet(UDMA0_BASE,buffer);                                                  // I am a little puzzled by this function 
uDMAChannelAttributeEnable(UDMA0_BASE,UDMA_CHAN_UART0_TX,
UDMA_ATTR_ALTSELECT|UDMA_ATTR_HIGH_PRIORITY);

uDMAChannelControlSet(UDMA0_BASE,UDMA_PRI_SELECT, UDMA_SIZE_8 |UDMA_SRC_INC_8| UDMA_ARB_8|UDMA_DST_INC_NONE );

// UARTDMAEnable(UART_BASE,UART_DMA_TX);                                       // if i call this function ,the mcu will not run ,i donot know why

}

// use this function to transfer data

void set_dma_auto_transfer(const uint8_t *src,uint32_t len)
{
uDMAChannelTransferSet(UDMA0_BASE,UDMA_PRI_SELECT,
UDMA_MODE_BASIC, // on a resquest
(uint8_t *)src,
(uint32_t*)(UART_BASE + UART_O_DR),len); 
uDMAChannelRequest(UDMA0_BASE,UDMA_CHAN_UART0_TX); 
}

when I call this function ,it cannot transfer any data…..

there are some mistakes in my codes,but i still cannot findout where the mistakes are,can you halp me?

Alvin Chen：

http://dev.ti.com/tirex/content/simplelink_cc13x0_sdk_1_30_00_06/docs/tidrivers/doxygen/html/_u_d_m_a_c_c26_x_x_8h.html