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63 lines
2.1 KiB
C
63 lines
2.1 KiB
C
/*
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* SPDX-FileCopyrightText: 2022-2024 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 "soc/twai_periph.h"
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#include "soc/twai_reg.h"
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#include "soc/gpio_sig_map.h"
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const twai_controller_signal_conn_t twai_controller_periph_signals = {
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.controllers = {
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[0] = {
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.module = PERIPH_TWAI0_MODULE,
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.irq_id = ETS_TWAI0_INTR_SOURCE,
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.tx_sig = TWAI_TX_IDX,
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.rx_sig = TWAI_RX_IDX,
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.bus_off_sig = TWAI_BUS_OFF_ON_IDX,
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.clk_out_sig = TWAI_CLKOUT_IDX,
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.stand_by_sig = TWAI_STANDBY_IDX,
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}
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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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* - TWAI_MODE_REG
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* - TWAI_INTERRUPT_ENABLE_REG
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* - TWAI_BUS_TIMING_0_REG / TWAI_BUS_TIMING_1_REG
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* - TWAI_ERR_WARNING_LIMIT_REG
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* - TWAI_RX_ERR_CNT_REG
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* - TWAI_TX_ERR_CNT_REG
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* - TWAI_DATA_x_REG
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* - TWAI_CLOCK_DIVIDER_REG
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* - TWAI_SW_STANDBY_CFG_REG
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* - TWAI_HW_CFG_REG
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* - TWAI_HW_STANDBY_CNT_REG
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* - TWAI_IDLE_INTR_CNT_REG
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* - TWAI_ECO_CFG_REG
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* - TWAI_TIMESTAMP_PRESCALER_REG
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* - TWAI_TIMESTAMP_CFG_REG
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*/
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#define TWAI_RETENTION_REGS_CNT 28
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#define TWAI_RETENTION_REGS_BASE(i) DR_REG_TWAI_BASE
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static const uint32_t twai_regs_map[4] = {0x9fffe0d1, 0xdf, 0x0, 0x0};
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#define TWAI_SLEEP_RETENTION_ENTRIES(id) { \
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[0] = { .config = REGDMA_LINK_ADDR_MAP_INIT(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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}
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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[SOC_TWAI_CONTROLLER_NUM] = {
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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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