msp430F2471控制ads1298,SPI通讯,我能做到的最高采样频率是4K。
msp430F2471 时钟设置:
DCOCTL = 0; // Select lowest DCOx and MODx settings
BCSCTL1 = CALBC1_16MHZ; // Set DCO to 16MHz
DCOCTL = CALDCO_16MHZ;
msp430F2471 SPI设置:
P5SEL |= 0x0E; // P5.3,2,1 option select
UCB1CTL1 |= UCSWRST;
UCB1CTL0 |= UCMST + UCMSB + UCSYNC; //3-pin, 8-bit SPI master //
UCB1CTL1 |= UCSSEL_2; // SMCLK
UCB1BR0 = 4; // SCLK
UCB1BR1 = 0; //
UCB1CTL1 &= ~UCSWRST; // **Initialize USCI state machine**
哪位指教一下,如何再提高采样频率?谢谢!