Here are the data structures with brief descriptions:
  genclk_config | Hardware representation of a set of generic clock parameters |
| gpio_map_t | A type definition of pins and modules connectivity |
| pll_config | Hardware-specific representation of PLL configuration |
| spi_device | Polled SPI device definition |
| spi_options_t | Option structure for SPI channels |
| StructCPtr | Structure of pointers to constant 64-, 32-, 16- and 8-bit unsigned integers |
| StructCVPtr | Structure of pointers to constant volatile 64-, 32-, 16- and 8-bit unsigned integers |
| StructPtr | Structure of pointers to 64-, 32-, 16- and 8-bit unsigned integers |
| StructVPtr | Structure of pointers to volatile 64-, 32-, 16- and 8-bit unsigned integers |
| tLED_DESCRIPTOR | Structure describing LED hardware connections |
| u_avr32_flashc_fcmd_t | |
| u_avr32_flashc_fcr_t | |
| u_avr32_spi_cr_t | |
| u_avr32_spi_csr_t | |
| u_avr32_spi_idr_t | |
| u_avr32_spi_ier_t | |
| u_avr32_spi_mr_t | |
| u_avr32_spi_tdr_t | |
| Union16 | 16-bit union |
| Union32 | 32-bit union |
| Union64 | 64-bit union |
| UnionCPtr | Union of pointers to constant 64-, 32-, 16- and 8-bit unsigned integers |
| UnionCVPtr | Union of pointers to constant volatile 64-, 32-, 16- and 8-bit unsigned integers |
| UnionPtr | Union of pointers to 64-, 32-, 16- and 8-bit unsigned integers |
 UnionVPtr | Union of pointers to volatile 64-, 32-, 16- and 8-bit unsigned integers |
1.8.5