| // THIS HEADER FILE IS AUTOMATICALLY GENERATED -- DO NOT EDIT |
| |
| /* |
| * Copyright (c) 2021 Raspberry Pi (Trading) Ltd. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #ifndef _HARDWARE_STRUCTS_PWM_H |
| #define _HARDWARE_STRUCTS_PWM_H |
| |
| #include "hardware/address_mapped.h" |
| #include "hardware/regs/pwm.h" |
| |
| // Reference to datasheet: https://datasheets.raspberrypi.com/rp2040/rp2040-datasheet.pdf#tab-registerlist_pwm |
| // |
| // The _REG_ macro is intended to help make the register navigable in your IDE (for example, using the "Go to Definition" feature) |
| // _REG_(x) will link to the corresponding register in hardware/regs/pwm.h. |
| // |
| // Bit-field descriptions are of the form: |
| // BITMASK [BITRANGE]: FIELDNAME (RESETVALUE): DESCRIPTION |
| |
| typedef struct pwm_slice_hw { |
| _REG_(PWM_CH0_CSR_OFFSET) // PWM_CH0_CSR |
| // Control and status register |
| // 0x00000080 [7] : PH_ADV (0): Advance the phase of the counter by 1 count, while it is running |
| // 0x00000040 [6] : PH_RET (0): Retard the phase of the counter by 1 count, while it is running |
| // 0x00000030 [5:4] : DIVMODE (0) |
| // 0x00000008 [3] : B_INV (0): Invert output B |
| // 0x00000004 [2] : A_INV (0): Invert output A |
| // 0x00000002 [1] : PH_CORRECT (0): 1: Enable phase-correct modulation |
| // 0x00000001 [0] : EN (0): Enable the PWM channel |
| io_rw_32 csr; |
| |
| _REG_(PWM_CH0_DIV_OFFSET) // PWM_CH0_DIV |
| // INT and FRAC form a fixed-point fractional number |
| // 0x00000ff0 [11:4] : INT (1) |
| // 0x0000000f [3:0] : FRAC (0) |
| io_rw_32 div; |
| |
| _REG_(PWM_CH0_CTR_OFFSET) // PWM_CH0_CTR |
| // Direct access to the PWM counter |
| // 0x0000ffff [15:0] : CH0_CTR (0) |
| io_rw_32 ctr; |
| |
| _REG_(PWM_CH0_CC_OFFSET) // PWM_CH0_CC |
| // Counter compare values |
| // 0xffff0000 [31:16] : B (0) |
| // 0x0000ffff [15:0] : A (0) |
| io_rw_32 cc; |
| |
| _REG_(PWM_CH0_TOP_OFFSET) // PWM_CH0_TOP |
| // Counter wrap value |
| // 0x0000ffff [15:0] : CH0_TOP (0xffff) |
| io_rw_32 top; |
| } pwm_slice_hw_t; |
| |
| typedef struct { |
| pwm_slice_hw_t slice[NUM_PWM_SLICES]; // 8 |
| |
| _REG_(PWM_EN_OFFSET) // PWM_EN |
| // This register aliases the CSR_EN bits for all channels |
| // 0x00000080 [7] : CH7 (0) |
| // 0x00000040 [6] : CH6 (0) |
| // 0x00000020 [5] : CH5 (0) |
| // 0x00000010 [4] : CH4 (0) |
| // 0x00000008 [3] : CH3 (0) |
| // 0x00000004 [2] : CH2 (0) |
| // 0x00000002 [1] : CH1 (0) |
| // 0x00000001 [0] : CH0 (0) |
| io_rw_32 en; |
| |
| _REG_(PWM_INTR_OFFSET) // PWM_INTR |
| // Raw Interrupts |
| // 0x00000080 [7] : CH7 (0) |
| // 0x00000040 [6] : CH6 (0) |
| // 0x00000020 [5] : CH5 (0) |
| // 0x00000010 [4] : CH4 (0) |
| // 0x00000008 [3] : CH3 (0) |
| // 0x00000004 [2] : CH2 (0) |
| // 0x00000002 [1] : CH1 (0) |
| // 0x00000001 [0] : CH0 (0) |
| io_rw_32 intr; |
| |
| _REG_(PWM_INTE_OFFSET) // PWM_INTE |
| // Interrupt Enable |
| // 0x00000080 [7] : CH7 (0) |
| // 0x00000040 [6] : CH6 (0) |
| // 0x00000020 [5] : CH5 (0) |
| // 0x00000010 [4] : CH4 (0) |
| // 0x00000008 [3] : CH3 (0) |
| // 0x00000004 [2] : CH2 (0) |
| // 0x00000002 [1] : CH1 (0) |
| // 0x00000001 [0] : CH0 (0) |
| io_rw_32 inte; |
| |
| _REG_(PWM_INTF_OFFSET) // PWM_INTF |
| // Interrupt Force |
| // 0x00000080 [7] : CH7 (0) |
| // 0x00000040 [6] : CH6 (0) |
| // 0x00000020 [5] : CH5 (0) |
| // 0x00000010 [4] : CH4 (0) |
| // 0x00000008 [3] : CH3 (0) |
| // 0x00000004 [2] : CH2 (0) |
| // 0x00000002 [1] : CH1 (0) |
| // 0x00000001 [0] : CH0 (0) |
| io_rw_32 intf; |
| |
| _REG_(PWM_INTS_OFFSET) // PWM_INTS |
| // Interrupt status after masking & forcing |
| // 0x00000080 [7] : CH7 (0) |
| // 0x00000040 [6] : CH6 (0) |
| // 0x00000020 [5] : CH5 (0) |
| // 0x00000010 [4] : CH4 (0) |
| // 0x00000008 [3] : CH3 (0) |
| // 0x00000004 [2] : CH2 (0) |
| // 0x00000002 [1] : CH1 (0) |
| // 0x00000001 [0] : CH0 (0) |
| io_ro_32 ints; |
| } pwm_hw_t; |
| |
| #define pwm_hw ((pwm_hw_t *const)PWM_BASE) |
| |
| static_assert( NUM_PWM_SLICES == 8, ""); |
| |
| #endif |
