int spectr_fpga_init(void)
{
/* update hw specific parmateres, NOTE, this is now hardcoded */
g_spectr_fpga_adc_max_v = c_spectr_fpga_adc_max_v_revD;
/* If maybe needed, cleanup the FD & memory pointer */
if(__spectr_fpga_cleanup_mem() < 0)
return -1;
g_spectr_fpga_mem_fd = open("/dev/uio/api", O_RDWR | O_SYNC);
if(g_spectr_fpga_mem_fd < 0) {
fprintf(stderr, "ERROR: failed open of UIO device: %s\n", strerror(errno));
return -1;
}
g_spectr_fpga_reg_mem = mmap(NULL, SPECTR_FPGA_BASE_SIZE, PROT_READ | PROT_WRITE,
MAP_SHARED, g_spectr_fpga_mem_fd, (SPECTR_FPGA_BASE_ADDR >> 20) * sysconf(_SC_PAGESIZE));
if((void *)g_spectr_fpga_reg_mem == MAP_FAILED) {
fprintf(stderr, "mmap() failed: %s\n", strerror(errno));
__spectr_fpga_cleanup_mem();
return -1;
}
g_spectr_fpga_cha_mem = (uint32_t *)g_spectr_fpga_reg_mem +
(SPECTR_FPGA_CHA_OFFSET / sizeof(uint32_t));
g_spectr_fpga_chb_mem = (uint32_t *)g_spectr_fpga_reg_mem +
(SPECTR_FPGA_CHB_OFFSET / sizeof(uint32_t));
return 0;
}
int spectr_fpga_init(void)
{
void *page_ptr;
long page_addr, page_off, page_size = sysconf(_SC_PAGESIZE);
/* update hw specific parmateres */
if(update_hw_spec_par()<0){
return -1;
}
/* If maybe needed, cleanup the FD & memory pointer */
if(__spectr_fpga_cleanup_mem() < 0)
return -1;
g_spectr_fpga_mem_fd = open("/dev/mem", O_RDWR | O_SYNC);
if(g_spectr_fpga_mem_fd < 0) {
fprintf(stderr, "open(/dev/mem) failed: %s\n", strerror(errno));
return -1;
}
page_addr = SPECTR_FPGA_BASE_ADDR & (~(page_size-1));
page_off = SPECTR_FPGA_BASE_ADDR - page_addr;
page_ptr = mmap(NULL, SPECTR_FPGA_BASE_SIZE, PROT_READ | PROT_WRITE,
MAP_SHARED, g_spectr_fpga_mem_fd, page_addr);
if((void *)page_ptr == MAP_FAILED) {
fprintf(stderr, "mmap() failed: %s\n", strerror(errno));
__spectr_fpga_cleanup_mem();
return -1;
}
g_spectr_fpga_reg_mem = page_ptr + page_off;
g_spectr_fpga_cha_mem = (uint32_t *)g_spectr_fpga_reg_mem +
(SPECTR_FPGA_CHA_OFFSET / sizeof(uint32_t));
g_spectr_fpga_chb_mem = (uint32_t *)g_spectr_fpga_reg_mem +
(SPECTR_FPGA_CHB_OFFSET / sizeof(uint32_t));
return 0;
}
int spectr_fpga_exit(void)
{
__spectr_fpga_cleanup_mem();
return 0;
}