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feat(rmt): support sleep retention

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by back up the registers
This commit is contained in:
morris
2024-04-15 18:58:53 +08:00
parent 6a919dcc16
commit e8e975112a
34 changed files with 390 additions and 37 deletions
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33
components/soc/esp32c6/rmt_periph.c
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@@ -1,16 +1,16 @@
/*
* SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2022-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "soc/rmt_periph.h"
#include "soc/rmt_reg.h"
#include "soc/gpio_sig_map.h"
const rmt_signal_conn_t rmt_periph_signals = {
.groups = {
[0] = {
.module = PERIPH_RMT_MODULE,
.irq = ETS_RMT_INTR_SOURCE,
.channels = {
[0] = {
@@ -33,3 +33,32 @@ const rmt_signal_conn_t rmt_periph_signals = {
}
}
};
/**
* RMT Registers to be saved during sleep retention
* - Channel configuration registers, e.g.: RMT_CH0CONF0_REG, RMT_CH3CONF0_REG, RMT_CH3CONF1_REG, RMT_CH0_TX_LIM_REG, RMT_CH3_RX_LIM_REG
* - TX synchronization registers, e.g.: RMT_TX_SIM_REG
* - Interrupt enable registers, e.g.: RMT_INT_ENA_REG
* - Carrier duty registers, e.g.: RMT_CH0CARRIER_DUTY_REG, RMT_CH3_RX_CARRIER_RM_REG
* - Global configuration registers, e.g.: RMT_SYS_CONF_REG
*/
#define RMT_RETENTION_REGS_CNT 17
#define RMT_RETENTION_REGS_BASE (DR_REG_RMT_BASE + 0x10)
static const uint32_t rmt_regs_map[4] = {0xffd03f, 0x0, 0x0, 0x0};
static const regdma_entries_config_t rmt_regdma_entries[] = {
[0] = {
.config = REGDMA_LINK_ADDR_MAP_INIT(REGDMA_RMT_LINK(0x00),
RMT_RETENTION_REGS_BASE, RMT_RETENTION_REGS_BASE,
RMT_RETENTION_REGS_CNT, 0, 0,
rmt_regs_map[0], rmt_regs_map[1],
rmt_regs_map[2], rmt_regs_map[3]),
.owner = ENTRY(0) | ENTRY(2),
},
};
const rmt_reg_retention_info_t rmt_reg_retention_info[SOC_RMT_GROUPS] = {
[0] = {
.regdma_entry_array = rmt_regdma_entries,
.array_size = ARRAY_SIZE(rmt_regdma_entries)
},
};