mirror of
https://github.com/espressif/esp-idf.git
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wanckl
89 lines
3.0 KiB
C
89 lines
3.0 KiB
C
/*
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* SPDX-FileCopyrightText: 2025-2026 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "hal/twai_periph.h"
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#include "soc/gpio_sig_map.h"
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#include "soc/interrupts.h"
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const twai_signal_conn_t twai_periph_signals[1] = {
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[0] = {
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.module_name = "TWAI0",
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.irq_id = ETS_TWAI0_INTR_SOURCE,
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.timer_irq_id = ETS_TWAI0_TIMER_INTR_SOURCE,
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.tx_sig = TWAI0_TX_IDX,
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.rx_sig = TWAI0_RX_IDX,
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.bus_off_sig = -1,
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.clk_out_sig = -1,
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.stand_by_sig = -1,
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}
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};
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/**
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* TWAI Registers to be saved during sleep retention
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* - TWAIFD_MODE_SETTINGS_REG
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* - TWAIFD_STATUS_REG
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* - TWAIFD_COMMAND_REG
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* - TWAIFD_INT_ENA_SET_REG
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* - TWAIFD_INT_ENA_CLR_REG
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* - TWAIFD_BTR_REG
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* - TWAIFD_BTR_FD_REG
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* - TWAIFD_EWL_ERP_FAULT_STATE_REG
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* - TWAIFD_REC_TEC_REG
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* - TWAIFD_ERR_NORM_ERR_FD_REG
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* - TWAIFD_FILTER_A_MASK_REG
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* - TWAIFD_FILTER_A_VAL_REG
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* - TWAIFD_FILTER_B_MASK_REG
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* - TWAIFD_FILTER_B_VAL_REG
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* - TWAIFD_FILTER_C_MASK_REG
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* - TWAIFD_FILTER_C_VAL_REG
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* - TWAIFD_FILTER_RAN_LOW_REG
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* - TWAIFD_FILTER_RAN_HIGH_REG
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* - TWAIFD_FILTER_CONTROL_FILTER_STATUS_REG
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* - TWAIFD_RX_STATUS_RX_SETTINGS_REG
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* - TWAIFD_TX_COMMAND_TXTB_INFO_REG
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* - TWAIFD_TX_PRIORITY_REG
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* - TWAIFD_TRV_DELAY_SSP_CFG_REG
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* - TWAIFD_RX_FR_CTR_REG
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* - TWAIFD_TX_FR_CTR_REG
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*/
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#define TWAI_RETENTION_REGS_CNT 25
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#define TWAI_RETENTION_REGS_BASE(i) DR_REG_TWAIFD_BASE
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static const uint32_t twai_regs_map[4] = {0xb27fdf37, 0x3, 0x0, 0x0};
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// twai timer registers is far away from twai registers, so we need a separate link
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// - TWAIFD_TIMER_INT_ENA_REG
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// - TWAIFD_TIMER_CFG_REG
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#define TWAI_TIMER_RETENTION_REGS_CNT 2
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#define TWAI_TIMER_RETENTION_REGS_BASE(i) (DR_REG_TWAIFD_BASE + 0xfe0)
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static const uint32_t twai_timer_regs_map[4] = {0x5, 0x0, 0x0, 0x0};
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#define TWAI_SLEEP_RETENTION_ENTRIES(id) { \
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[0] = { .config = REGDMA_LINK_ADDR_MAP_INIT( \
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REGDMA_TWAI_LINK(0x00), \
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TWAI_RETENTION_REGS_BASE(id), TWAI_RETENTION_REGS_BASE(id), \
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TWAI_RETENTION_REGS_CNT, 0, 0, \
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twai_regs_map[0], twai_regs_map[1], \
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twai_regs_map[2], twai_regs_map[3]), \
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.owner = ENTRY(0) | ENTRY(2) }, \
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[1] = { .config = REGDMA_LINK_ADDR_MAP_INIT( \
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REGDMA_TWAI_LINK(0x01), \
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TWAI_TIMER_RETENTION_REGS_BASE(id), TWAI_TIMER_RETENTION_REGS_BASE(id), \
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TWAI_TIMER_RETENTION_REGS_CNT, 0, 0, \
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twai_timer_regs_map[0], twai_timer_regs_map[1], \
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twai_timer_regs_map[2], twai_timer_regs_map[3]), \
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.owner = ENTRY(0) | ENTRY(2) }, \
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}
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static const regdma_entries_config_t twai0_regs_retention[] = TWAI_SLEEP_RETENTION_ENTRIES(0);
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const twai_reg_retention_info_t twai_reg_retention_info[1] = {
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[0] = {
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.module_id = SLEEP_RETENTION_MODULE_TWAI0,
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.entry_array = twai0_regs_retention,
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.array_size = ARRAY_SIZE(twai0_regs_retention)
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},
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};
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