写一个C语言的AD9832驱动

非常感谢您的提问。以下是一个简单的C语言AD9832驱动的示例代码：

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <wiringPi.h>
#include <wiringPiSPI.h>

#define AD9832_FSYNC 0
#define AD9832_RESET 1
#define AD9832_FREQ0 2
#define AD9832_FREQ1 3
#define AD9832_PHASE0 4
#define AD9832_PHASE1 5
#define AD9832_CONTROL 6

#define AD9832_B28 13
#define AD9832_HLB 12
#define AD9832_FSELECT 11
#define AD9832_PSELECT 10
#define AD9832_RESETB 8
#define AD9832_SLEEP1 7
#define AD9832_SLEEP12 6
#define AD9832_OPBITEN 5
#define AD9832_DIV2 3
#define AD9832_MODE 1

#define AD9832_FREQ_SCALE 10
#define AD9832_PHASE_SCALE 12

#define AD9832_SPI_SPEED 1000000

void ad9832_write(uint8_t reg, uint16_t data) {
uint8_t buffer[3];
buffer[0] = reg;
buffer[1] = (data >> 8) & 0xFF;
buffer[2] = data & 0xFF;
wiringPiSPIDataRW(0, buffer, 3);
}

void ad9832_init() {
wiringPiSPISetup(0, AD9832_SPI_SPEED);
pinMode(AD9832_FSYNC, OUTPUT);
pinMode(AD9832_RESET, OUTPUT);
digitalWrite(AD9832_FSYNC, HIGH);
digitalWrite(AD9832_RESET, HIGH);
ad9832_write(AD9832_CONTROL, (1 << AD9832_RESETB) | (1 << AD9832_SLEEP12));
ad9832_write(AD9832_FREQ0, 0);
ad9832_write(AD9832_FREQ1, 0);
ad9832_write(AD9832_PHASE0, 0);
ad9832_write(AD9832_PHASE1, 0);
ad9832_write(AD9832_CONTROL, (1 << AD9832_RESETB) | (1 << AD9832_SLEEP1) | (1 << AD9832_OPBITEN) | (1 << AD9832_MODE));
}

void ad9832_set_frequency(uint32_t frequency) {
uint32_t freq_reg = (uint32_t)(((double)frequency / (double)AD9832_SPI_SPEED) * (double)(1 << AD9832_FREQ_SCALE));
ad9832_write(AD9832_FREQ0, freq_reg & 0xFFFF);
ad9832_write(AD9832_FREQ1, (freq_reg >> 16) & 0xFFFF);
}

void ad9832_set_phase(uint16_t phase) {
uint16_t phase_reg = (uint16_t)(((double)phase / 360.0) * (double)(1 << AD9832_PHASE_SCALE));
ad9832_write(AD9832_PHASE0, phase_reg & 0xFFFF);
ad9832_write(AD9832_PHASE1, (phase_reg >> 16) & 0xFFFF);
}

int main() {
ad9832_init();
ad9832_set_frequency(1000);
ad9832_set_phase(0);
return 0;
}

希望这个示例代码能够帮助您。如果您有任何问题，请随时问我。