f654df0e78
- Fully open toolchain: arm-none-eabi-gcc inside Podman/Docker container - Platform-agnostic build via justfile (auto-detects podman vs docker) - CMake + Ninja build system with arm-none-eabi toolchain file - nRF52840 linker script and startup with full 64-entry vector table - Register access via typed bitfield unions (include/regs.h) - FHSS channel sequencer: AES-128-ECB PRNG over 40 channels (2402-2480 MHz) - Low-power sleep via SYSTEM_ON WFI + GPIOTE wakeup on button press - Vendor deps as shallow git submodules: nrfx, CMSIS_5, tiny-AES-c
91 lines
3.3 KiB
C
91 lines
3.3 KiB
C
#pragma once
|
|
#include <stdint.h>
|
|
|
|
/*
|
|
* Hardware register bitfield unions for nRF52840 peripherals.
|
|
* Layout is guaranteed correct only with arm-none-eabi-gcc (LSB-first bitfields).
|
|
* Bit ranges match nRF52840 Product Specification v1.7.
|
|
*/
|
|
|
|
/* ── GPIOTE ──────────────────────────────────────────────────────────────── */
|
|
|
|
/* CONFIG[n] — channel configuration */
|
|
typedef union {
|
|
struct {
|
|
uint32_t MODE : 2; /* [1:0] 0=Disabled 1=Event 3=Task */
|
|
uint32_t : 6; /* [7:2] reserved */
|
|
uint32_t PSEL : 5; /* [12:8] pin number within port */
|
|
uint32_t PORT : 1; /* [13] 0=Port0 1=Port1 */
|
|
uint32_t : 2; /* [15:14] reserved */
|
|
uint32_t POLARITY : 2; /* [17:16] 0=None 1=LoToHi 2=HiToLo 3=Toggle */
|
|
uint32_t : 2; /* [19:18] reserved */
|
|
uint32_t OUTINIT : 1; /* [20] initial output value for Task mode */
|
|
uint32_t : 11; /* [31:21] reserved */
|
|
} bit;
|
|
uint32_t reg;
|
|
} gpiote_config_t;
|
|
|
|
#define GPIOTE_MODE_DISABLED 0u
|
|
#define GPIOTE_MODE_EVENT 1u
|
|
#define GPIOTE_MODE_TASK 3u
|
|
#define GPIOTE_POL_NONE 0u
|
|
#define GPIOTE_POL_LOTOHI 1u
|
|
#define GPIOTE_POL_HITOLO 2u
|
|
#define GPIOTE_POL_TOGGLE 3u
|
|
|
|
/* INTENSET / INTENCLR — interrupt enable */
|
|
typedef union {
|
|
struct {
|
|
uint32_t IN0 : 1; /* [0] channel 0 input event */
|
|
uint32_t IN1 : 1; /* [1] channel 1 input event */
|
|
uint32_t IN2 : 1; /* [2] */
|
|
uint32_t IN3 : 1; /* [3] */
|
|
uint32_t IN4 : 1; /* [4] */
|
|
uint32_t IN5 : 1; /* [5] */
|
|
uint32_t IN6 : 1; /* [6] */
|
|
uint32_t IN7 : 1; /* [7] */
|
|
uint32_t : 23; /* [30:8] reserved */
|
|
uint32_t PORT : 1; /* [31] PORT event */
|
|
} bit;
|
|
uint32_t reg;
|
|
} gpiote_inten_t;
|
|
|
|
/* ── RADIO ───────────────────────────────────────────────────────────────── */
|
|
|
|
/* FREQUENCY — radio channel */
|
|
typedef union {
|
|
struct {
|
|
uint32_t FREQUENCY : 7; /* [6:0] offset from base frequency in MHz */
|
|
uint32_t : 1; /* [7] reserved */
|
|
uint32_t MAP : 1; /* [8] 0: base=2400 MHz 1: base=2360 MHz */
|
|
uint32_t : 23; /* [31:9] reserved */
|
|
} bit;
|
|
uint32_t reg;
|
|
} radio_frequency_t;
|
|
|
|
#define RADIO_MAP_DEFAULT 0u /* channel n → 2400+n MHz */
|
|
#define RADIO_MAP_BLE 1u /* channel n → 2360+n MHz */
|
|
|
|
/* TXPOWER — transmit power */
|
|
typedef union {
|
|
struct {
|
|
int32_t TXPOWER : 8; /* [7:0] signed dBm: +8, +7, +6, +5, +4, +3, +2,
|
|
0, -4, -8, -12, -16, -20, -40 */
|
|
uint32_t : 24; /* [31:8] reserved */
|
|
} bit;
|
|
uint32_t reg;
|
|
} radio_txpower_t;
|
|
|
|
/* MODE — radio data rate and modulation */
|
|
typedef union {
|
|
struct {
|
|
uint32_t MODE : 4; /* [3:0] 0=NRF_1Mbit 1=NRF_2Mbit 4=BLE_1Mbit … */
|
|
uint32_t : 28; /* [31:4] reserved */
|
|
} bit;
|
|
uint32_t reg;
|
|
} radio_mode_t;
|
|
|
|
#define RADIO_MODE_NRF_1MBIT 0u
|
|
#define RADIO_MODE_NRF_2MBIT 1u
|
|
#define RADIO_MODE_BLE_1MBIT 4u
|