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esp32-hal-spi.c
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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "esp32-hal-spi.h"
#if SOC_GPSPI_SUPPORTED
#include "esp32-hal.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "esp_attr.h"
#include "soc/spi_reg.h"
#include "soc/spi_struct.h"
#include "soc/periph_defs.h"
#include "soc/io_mux_reg.h"
#include "soc/gpio_sig_map.h"
#include "soc/rtc.h"
#include "hal/clk_gate_ll.h"
#include "esp32-hal-periman.h"
#include "esp_private/periph_ctrl.h"
#include "esp_system.h"
#include "esp_intr_alloc.h"
#if CONFIG_IDF_TARGET_ESP32 // ESP32/PICO-D4
#include "soc/dport_reg.h"
#include "esp32/rom/ets_sys.h"
#include "esp32/rom/gpio.h"
#elif CONFIG_IDF_TARGET_ESP32S2
#include "soc/dport_reg.h"
#include "esp32s2/rom/ets_sys.h"
#include "esp32s2/rom/gpio.h"
#elif CONFIG_IDF_TARGET_ESP32S3
#include "soc/dport_reg.h"
#include "esp32s3/rom/ets_sys.h"
#include "esp32s3/rom/gpio.h"
#elif CONFIG_IDF_TARGET_ESP32C2
#include "esp32c2/rom/ets_sys.h"
#include "esp32c2/rom/gpio.h"
#elif CONFIG_IDF_TARGET_ESP32C3
#include "esp32c3/rom/ets_sys.h"
#include "esp32c3/rom/gpio.h"
#elif CONFIG_IDF_TARGET_ESP32C6
#include "esp32c6/rom/ets_sys.h"
#include "esp32c6/rom/gpio.h"
#elif CONFIG_IDF_TARGET_ESP32H2
#include "esp32h2/rom/ets_sys.h"
#include "esp32h2/rom/gpio.h"
#elif CONFIG_IDF_TARGET_ESP32P4
#include "esp32p4/rom/ets_sys.h"
#include "esp32p4/rom/gpio.h"
#else
#error Target CONFIG_IDF_TARGET is not supported
#endif
struct spi_struct_t {
volatile spi_dev_t *dev;
#if !CONFIG_DISABLE_HAL_LOCKS
SemaphoreHandle_t lock;
#endif
uint8_t num;
int8_t sck;
int8_t miso;
int8_t mosi;
int8_t ss;
};
#if CONFIG_IDF_TARGET_ESP32S2
// ESP32S2
#define SPI_COUNT (3)
#define SPI_CLK_IDX(p) ((p == 0) ? SPICLK_OUT_MUX_IDX : ((p == 1) ? FSPICLK_OUT_MUX_IDX : ((p == 2) ? SPI3_CLK_OUT_MUX_IDX : 0)))
#define SPI_MISO_IDX(p) ((p == 0) ? SPIQ_OUT_IDX : ((p == 1) ? FSPIQ_OUT_IDX : ((p == 2) ? SPI3_Q_OUT_IDX : 0)))
#define SPI_MOSI_IDX(p) ((p == 0) ? SPID_IN_IDX : ((p == 1) ? FSPID_IN_IDX : ((p == 2) ? SPI3_D_IN_IDX : 0)))
#define SPI_SPI_SS_IDX(n) ((n == 0) ? SPICS0_OUT_IDX : ((n == 1) ? SPICS1_OUT_IDX : 0))
#define SPI_HSPI_SS_IDX(n) ((n == 0) ? SPI3_CS0_OUT_IDX : ((n == 1) ? SPI3_CS1_OUT_IDX : ((n == 2) ? SPI3_CS2_OUT_IDX : SPI3_CS0_OUT_IDX)))
#define SPI_FSPI_SS_IDX(n) ((n == 0) ? FSPICS0_OUT_IDX : ((n == 1) ? FSPICS1_OUT_IDX : ((n == 2) ? FSPICS2_OUT_IDX : FSPICS0_OUT_IDX)))
#define SPI_SS_IDX(p, n) ((p == 0) ? SPI_SPI_SS_IDX(n) : ((p == 1) ? SPI_SPI_SS_IDX(n) : ((p == 2) ? SPI_HSPI_SS_IDX(n) : 0)))
#elif CONFIG_IDF_TARGET_ESP32S3
// ESP32S3
#define SPI_COUNT (2)
#define SPI_CLK_IDX(p) ((p == 0) ? FSPICLK_OUT_IDX : ((p == 1) ? SPI3_CLK_OUT_IDX : 0))
#define SPI_MISO_IDX(p) ((p == 0) ? FSPIQ_OUT_IDX : ((p == 1) ? SPI3_Q_OUT_IDX : 0))
#define SPI_MOSI_IDX(p) ((p == 0) ? FSPID_IN_IDX : ((p == 1) ? SPI3_D_IN_IDX : 0))
#define SPI_HSPI_SS_IDX(n) ((n == 0) ? SPI3_CS0_OUT_IDX : ((n == 1) ? SPI3_CS1_OUT_IDX : 0))
#define SPI_FSPI_SS_IDX(n) ((n == 0) ? FSPICS0_OUT_IDX : ((n == 1) ? FSPICS1_OUT_IDX : 0))
#define SPI_SS_IDX(p, n) ((p == 0) ? SPI_FSPI_SS_IDX(n) : ((p == 1) ? SPI_HSPI_SS_IDX(n) : 0))
#elif CONFIG_IDF_TARGET_ESP32P4
// ESP32P4
#define SPI_COUNT (2) // SPI2 and SPI3. SPI0 and SPI1 are reserved for flash and PSRAM
#define SPI_CLK_IDX(p) ((p == 0) ? SPI2_CK_PAD_OUT_IDX : ((p == 1) ? SPI3_CK_PAD_OUT_IDX : 0))
#define SPI_MISO_IDX(p) ((p == 0) ? SPI2_Q_PAD_OUT_IDX : ((p == 1) ? SPI3_QO_PAD_OUT_IDX : 0))
#define SPI_MOSI_IDX(p) ((p == 0) ? SPI2_D_PAD_IN_IDX : ((p == 1) ? SPI3_D_PAD_IN_IDX : 0))
#define SPI_HSPI_SS_IDX(n) ((n == 0) ? SPI3_CS_PAD_OUT_IDX : ((n == 1) ? SPI3_CS1_PAD_OUT_IDX : ((n == 2) ? SPI3_CS2_PAD_OUT_IDX : 0)))
#define SPI_FSPI_SS_IDX(n) \
((n == 0) ? SPI2_CS_PAD_OUT_IDX \
: ((n == 1) ? SPI2_CS1_PAD_OUT_IDX \
: ((n == 2) ? SPI2_CS2_PAD_OUT_IDX \
: ((n == 3) ? SPI2_CS3_PAD_OUT_IDX : ((n == 4) ? SPI2_CS4_PAD_OUT_IDX : ((n == 5) ? SPI2_CS5_PAD_OUT_IDX : 0))))))
#define SPI_SS_IDX(p, n) ((p == 0) ? SPI_FSPI_SS_IDX(n) : ((p == 1) ? SPI_HSPI_SS_IDX(n) : 0))
#elif CONFIG_IDF_TARGET_ESP32C2 || CONFIG_IDF_TARGET_ESP32C3 || CONFIG_IDF_TARGET_ESP32C6 || CONFIG_IDF_TARGET_ESP32H2
// ESP32C3
#define SPI_COUNT (1)
#define SPI_CLK_IDX(p) FSPICLK_OUT_IDX
#define SPI_MISO_IDX(p) FSPIQ_OUT_IDX
#define SPI_MOSI_IDX(p) FSPID_IN_IDX
#define SPI_SPI_SS_IDX(n) ((n == 0) ? FSPICS0_OUT_IDX : ((n == 1) ? FSPICS1_OUT_IDX : ((n == 2) ? FSPICS2_OUT_IDX : FSPICS0_OUT_IDX)))
#define SPI_SS_IDX(p, n) SPI_SPI_SS_IDX(n)
#else
// ESP32
#define SPI_COUNT (4)
#define SPI_CLK_IDX(p) ((p == 0) ? SPICLK_OUT_IDX : ((p == 1) ? SPICLK_OUT_IDX : ((p == 2) ? HSPICLK_OUT_IDX : ((p == 3) ? VSPICLK_OUT_IDX : 0))))
#define SPI_MISO_IDX(p) ((p == 0) ? SPIQ_OUT_IDX : ((p == 1) ? SPIQ_OUT_IDX : ((p == 2) ? HSPIQ_OUT_IDX : ((p == 3) ? VSPIQ_OUT_IDX : 0))))
#define SPI_MOSI_IDX(p) ((p == 0) ? SPID_IN_IDX : ((p == 1) ? SPID_IN_IDX : ((p == 2) ? HSPID_IN_IDX : ((p == 3) ? VSPID_IN_IDX : 0))))
#define SPI_SPI_SS_IDX(n) ((n == 0) ? SPICS0_OUT_IDX : ((n == 1) ? SPICS1_OUT_IDX : ((n == 2) ? SPICS2_OUT_IDX : SPICS0_OUT_IDX)))
#define SPI_HSPI_SS_IDX(n) ((n == 0) ? HSPICS0_OUT_IDX : ((n == 1) ? HSPICS1_OUT_IDX : ((n == 2) ? HSPICS2_OUT_IDX : HSPICS0_OUT_IDX)))
#define SPI_VSPI_SS_IDX(n) ((n == 0) ? VSPICS0_OUT_IDX : ((n == 1) ? VSPICS1_OUT_IDX : ((n == 2) ? VSPICS2_OUT_IDX : VSPICS0_OUT_IDX)))
#define SPI_SS_IDX(p, n) ((p == 0) ? SPI_SPI_SS_IDX(n) : ((p == 1) ? SPI_SPI_SS_IDX(n) : ((p == 2) ? SPI_HSPI_SS_IDX(n) : ((p == 3) ? SPI_VSPI_SS_IDX(n) : 0))))
#endif
#if CONFIG_DISABLE_HAL_LOCKS
#define SPI_MUTEX_LOCK()
#define SPI_MUTEX_UNLOCK()
// clang-format off
static spi_t _spi_bus_array[] = {
#if CONFIG_IDF_TARGET_ESP32S2
{(volatile spi_dev_t *)(DR_REG_SPI1_BASE), 0, -1, -1, -1, -1},
{(volatile spi_dev_t *)(DR_REG_SPI2_BASE), 1, -1, -1, -1, -1},
{(volatile spi_dev_t *)(DR_REG_SPI3_BASE), 2, -1, -1, -1, -1}
#elif CONFIG_IDF_TARGET_ESP32S3 || CONFIG_IDF_TARGET_ESP32P4
{(volatile spi_dev_t *)(DR_REG_SPI2_BASE), 0, -1, -1, -1, -1},
{(volatile spi_dev_t *)(DR_REG_SPI3_BASE), 1, -1, -1, -1, -1}
#elif CONFIG_IDF_TARGET_ESP32C2
{(volatile spi_dev_t *)(DR_REG_SPI2_BASE), 0, -1, -1, -1, -1}
#elif CONFIG_IDF_TARGET_ESP32C3
{(volatile spi_dev_t *)(DR_REG_SPI2_BASE), 0, -1, -1, -1, -1}
#elif CONFIG_IDF_TARGET_ESP32C6 || CONFIG_IDF_TARGET_ESP32H2
{(spi_dev_t *)(DR_REG_SPI2_BASE), 0, -1, -1, -1, -1}
#else
{(volatile spi_dev_t *)(DR_REG_SPI0_BASE), 0, -1, -1, -1, -1},
{(volatile spi_dev_t *)(DR_REG_SPI1_BASE), 1, -1, -1, -1, -1},
{(volatile spi_dev_t *)(DR_REG_SPI2_BASE), 2, -1, -1, -1, -1},
{(volatile spi_dev_t *)(DR_REG_SPI3_BASE), 3, -1, -1, -1, -1}
#endif
};
// clang-format on
#else
#define SPI_MUTEX_LOCK() \
do { \
} while (xSemaphoreTake(spi->lock, portMAX_DELAY) != pdPASS)
#define SPI_MUTEX_UNLOCK() xSemaphoreGive(spi->lock)
static spi_t _spi_bus_array[] = {
#if CONFIG_IDF_TARGET_ESP32S2
{(volatile spi_dev_t *)(DR_REG_SPI1_BASE), NULL, 0, -1, -1, -1, -1},
{(volatile spi_dev_t *)(DR_REG_SPI2_BASE), NULL, 1, -1, -1, -1, -1},
{(volatile spi_dev_t *)(DR_REG_SPI3_BASE), NULL, 2, -1, -1, -1, -1}
#elif CONFIG_IDF_TARGET_ESP32S3 || CONFIG_IDF_TARGET_ESP32P4
{(volatile spi_dev_t *)(DR_REG_SPI2_BASE), NULL, 0, -1, -1, -1, -1}, {(volatile spi_dev_t *)(DR_REG_SPI3_BASE), NULL, 1, -1, -1, -1, -1}
#elif CONFIG_IDF_TARGET_ESP32C2
{(volatile spi_dev_t *)(DR_REG_SPI2_BASE), NULL, 0, -1, -1, -1, -1}
#elif CONFIG_IDF_TARGET_ESP32C3
{(volatile spi_dev_t *)(DR_REG_SPI2_BASE), NULL, 0, -1, -1, -1, -1}
#elif CONFIG_IDF_TARGET_ESP32C6 || CONFIG_IDF_TARGET_ESP32H2
{(spi_dev_t *)(DR_REG_SPI2_BASE), NULL, 0, -1, -1, -1, -1}
#else
{(volatile spi_dev_t *)(DR_REG_SPI0_BASE), NULL, 0, -1, -1, -1, -1},
{(volatile spi_dev_t *)(DR_REG_SPI1_BASE), NULL, 1, -1, -1, -1, -1},
{(volatile spi_dev_t *)(DR_REG_SPI2_BASE), NULL, 2, -1, -1, -1, -1},
{(volatile spi_dev_t *)(DR_REG_SPI3_BASE), NULL, 3, -1, -1, -1, -1}
#endif
};
#endif
static bool spiDetachBus(void *bus) {
uint8_t spi_num = (int)bus - 1;
spi_t *spi = &_spi_bus_array[spi_num];
if (spi->dev->clock.val == 0) {
log_d("SPI bus already stopped");
return true;
} else if (spi->sck == -1 || (spi->miso == -1 && spi->mosi == -1)) {
log_d("Stopping SPI bus");
spiStopBus(spi);
spiDetachSCK(spi);
spiDetachMISO(spi);
spiDetachMOSI(spi);
spiDetachSS(spi);
spi = NULL;
return true;
}
return true;
}
static bool spiDetachBus_SCK(void *bus) {
uint8_t spi_num = (int)bus - 1;
spi_t *spi = &_spi_bus_array[spi_num];
if (spi->sck != -1) {
spiDetachSCK(spi);
spiDetachBus(bus);
}
return true;
}
static bool spiDetachBus_MISO(void *bus) {
uint8_t spi_num = (int)bus - 1;
spi_t *spi = &_spi_bus_array[spi_num];
if (spi->miso != -1) {
spiDetachMISO(spi);
spiDetachBus(bus);
}
return true;
}
static bool spiDetachBus_MOSI(void *bus) {
uint8_t spi_num = (int)bus - 1;
spi_t *spi = &_spi_bus_array[spi_num];
if (spi->mosi != -1) {
spiDetachMOSI(spi);
spiDetachBus(bus);
}
return true;
}
static bool spiDetachBus_SS(void *bus) {
uint8_t spi_num = (int)bus - 1;
spi_t *spi = &_spi_bus_array[spi_num];
if (spi->ss != -1) {
spiDetachSS(spi);
spiDetachBus(bus);
}
return true;
}
bool spiAttachSCK(spi_t *spi, int8_t sck) {
if (!spi || sck < 0) {
return false;
}
void *bus = perimanGetPinBus(sck, ESP32_BUS_TYPE_SPI_MASTER_SCK);
if (bus != NULL && !perimanClearPinBus(sck)) {
return false;
}
pinMode(sck, OUTPUT);
pinMatrixOutAttach(sck, SPI_CLK_IDX(spi->num), false, false);
spi->sck = sck;
if (!perimanSetPinBus(sck, ESP32_BUS_TYPE_SPI_MASTER_SCK, (void *)(spi->num + 1), spi->num, -1)) {
spiDetachBus_SCK((void *)(spi->num + 1));
log_e("Failed to set pin bus to SPI for pin %d", sck);
return false;
}
return true;
}
bool spiAttachMISO(spi_t *spi, int8_t miso) {
if (!spi || miso < 0) {
return false;
}
void *bus = perimanGetPinBus(miso, ESP32_BUS_TYPE_SPI_MASTER_MISO);
if (bus != NULL && !perimanClearPinBus(miso)) {
return false;
}
pinMode(miso, INPUT);
pinMatrixInAttach(miso, SPI_MISO_IDX(spi->num), false);
spi->miso = miso;
if (!perimanSetPinBus(miso, ESP32_BUS_TYPE_SPI_MASTER_MISO, (void *)(spi->num + 1), spi->num, -1)) {
spiDetachBus_MISO((void *)(spi->num + 1));
log_e("Failed to set pin bus to SPI for pin %d", miso);
return false;
}
return true;
}
bool spiAttachMOSI(spi_t *spi, int8_t mosi) {
if (!spi || mosi < 0) {
return false;
}
void *bus = perimanGetPinBus(mosi, ESP32_BUS_TYPE_SPI_MASTER_MOSI);
if (bus != NULL && !perimanClearPinBus(mosi)) {
return false;
}
pinMode(mosi, OUTPUT);
pinMatrixOutAttach(mosi, SPI_MOSI_IDX(spi->num), false, false);
spi->mosi = mosi;
if (!perimanSetPinBus(mosi, ESP32_BUS_TYPE_SPI_MASTER_MOSI, (void *)(spi->num + 1), spi->num, -1)) {
spiDetachBus_MOSI((void *)(spi->num + 1));
log_e("Failed to set pin bus to SPI for pin %d", mosi);
return false;
}
return true;
}
bool spiDetachSCK(spi_t *spi) {
if (!spi) {
return false;
}
int8_t sck = spi->sck;
if (sck != -1) {
pinMatrixOutDetach(sck, false, false);
spi->sck = -1;
perimanClearPinBus(sck);
}
return true;
}
bool spiDetachMISO(spi_t *spi) {
if (!spi) {
return false;
}
int8_t miso = spi->miso;
if (miso != -1) {
pinMatrixInDetach(SPI_MISO_IDX(spi->num), false, false);
spi->miso = -1;
perimanClearPinBus(miso);
}
return true;
}
bool spiDetachMOSI(spi_t *spi) {
if (!spi) {
return false;
}
int8_t mosi = spi->mosi;
if (mosi != -1) {
pinMatrixOutDetach(mosi, false, false);
spi->mosi = -1;
perimanClearPinBus(mosi);
}
return true;
}
bool spiAttachSS(spi_t *spi, uint8_t ss_num, int8_t ss) {
if (!spi || ss < 0 || ss_num > 2) {
return false;
}
void *bus = perimanGetPinBus(ss, ESP32_BUS_TYPE_SPI_MASTER_SS);
if (bus != NULL && !perimanClearPinBus(ss)) {
return false;
}
pinMode(ss, OUTPUT);
pinMatrixOutAttach(ss, SPI_SS_IDX(spi->num, ss_num), false, false);
spiEnableSSPins(spi, (1 << ss_num));
spi->ss = ss;
if (!perimanSetPinBus(ss, ESP32_BUS_TYPE_SPI_MASTER_SS, (void *)(spi->num + 1), spi->num, -1)) {
spiDetachBus_SS((void *)(spi->num + 1));
log_e("Failed to set pin bus to SPI for pin %d", ss);
return false;
}
return true;
}
bool spiDetachSS(spi_t *spi) {
if (!spi) {
return false;
}
int8_t ss = spi->ss;
if (ss != -1) {
pinMatrixOutDetach(ss, false, false);
spi->ss = -1;
perimanClearPinBus(ss);
}
return true;
}
void spiEnableSSPins(spi_t *spi, uint8_t ss_mask) {
if (!spi) {
return;
}
SPI_MUTEX_LOCK();
#if CONFIG_IDF_TARGET_ESP32
spi->dev->pin.val &= ~(ss_mask & SPI_SS_MASK_ALL);
#else
spi->dev->misc.val &= ~(ss_mask & SPI_SS_MASK_ALL);
#endif
SPI_MUTEX_UNLOCK();
}
void spiDisableSSPins(spi_t *spi, uint8_t ss_mask) {
if (!spi) {
return;
}
SPI_MUTEX_LOCK();
#if CONFIG_IDF_TARGET_ESP32
spi->dev->pin.val |= (ss_mask & SPI_SS_MASK_ALL);
#else
spi->dev->misc.val |= (ss_mask & SPI_SS_MASK_ALL);
#endif
SPI_MUTEX_UNLOCK();
}
void spiSSEnable(spi_t *spi) {
if (!spi) {
return;
}
SPI_MUTEX_LOCK();
spi->dev->user.cs_setup = 1;
spi->dev->user.cs_hold = 1;
SPI_MUTEX_UNLOCK();
}
void spiSSDisable(spi_t *spi) {
if (!spi) {
return;
}
SPI_MUTEX_LOCK();
spi->dev->user.cs_setup = 0;
spi->dev->user.cs_hold = 0;
SPI_MUTEX_UNLOCK();
}
void spiSSSet(spi_t *spi) {
if (!spi) {
return;
}
SPI_MUTEX_LOCK();
#if CONFIG_IDF_TARGET_ESP32
spi->dev->pin.cs_keep_active = 1;
#else
spi->dev->misc.cs_keep_active = 1;
#endif
SPI_MUTEX_UNLOCK();
}
void spiSSClear(spi_t *spi) {
if (!spi) {
return;
}
SPI_MUTEX_LOCK();
#if CONFIG_IDF_TARGET_ESP32
spi->dev->pin.cs_keep_active = 0;
#else
spi->dev->misc.cs_keep_active = 0;
#endif
SPI_MUTEX_UNLOCK();
}
uint32_t spiGetClockDiv(spi_t *spi) {
if (!spi) {
return 0;
}
return spi->dev->clock.val;
}
void spiSetClockDiv(spi_t *spi, uint32_t clockDiv) {
if (!spi) {
return;
}
SPI_MUTEX_LOCK();
spi->dev->clock.val = clockDiv;
SPI_MUTEX_UNLOCK();
}
uint8_t spiGetDataMode(spi_t *spi) {
if (!spi) {
return 0;
}
#if CONFIG_IDF_TARGET_ESP32
bool idleEdge = spi->dev->pin.ck_idle_edge;
#else
bool idleEdge = spi->dev->misc.ck_idle_edge;
#endif
bool outEdge = spi->dev->user.ck_out_edge;
if (idleEdge) {
if (outEdge) {
return SPI_MODE2;
}
return SPI_MODE3;
}
if (outEdge) {
return SPI_MODE1;
}
return SPI_MODE0;
}
void spiSetDataMode(spi_t *spi, uint8_t dataMode) {
if (!spi) {
return;
}
SPI_MUTEX_LOCK();
switch (dataMode) {
case SPI_MODE1:
#if CONFIG_IDF_TARGET_ESP32
spi->dev->pin.ck_idle_edge = 0;
#else
spi->dev->misc.ck_idle_edge = 0;
#endif
spi->dev->user.ck_out_edge = 1;
break;
case SPI_MODE2:
#if CONFIG_IDF_TARGET_ESP32
spi->dev->pin.ck_idle_edge = 1;
#else
spi->dev->misc.ck_idle_edge = 1;
#endif
spi->dev->user.ck_out_edge = 1;
break;
case SPI_MODE3:
#if CONFIG_IDF_TARGET_ESP32
spi->dev->pin.ck_idle_edge = 1;
#else
spi->dev->misc.ck_idle_edge = 1;
#endif
spi->dev->user.ck_out_edge = 0;
break;
case SPI_MODE0:
default:
#if CONFIG_IDF_TARGET_ESP32
spi->dev->pin.ck_idle_edge = 0;
#else
spi->dev->misc.ck_idle_edge = 0;
#endif
spi->dev->user.ck_out_edge = 0;
break;
}
SPI_MUTEX_UNLOCK();
}
uint8_t spiGetBitOrder(spi_t *spi) {
if (!spi) {
return 0;
}
return (spi->dev->ctrl.wr_bit_order | spi->dev->ctrl.rd_bit_order) == 0;
}
void spiSetBitOrder(spi_t *spi, uint8_t bitOrder) {
if (!spi) {
return;
}
SPI_MUTEX_LOCK();
if (SPI_MSBFIRST == bitOrder) {
spi->dev->ctrl.wr_bit_order = 0;
spi->dev->ctrl.rd_bit_order = 0;
} else if (SPI_LSBFIRST == bitOrder) {
spi->dev->ctrl.wr_bit_order = 1;
spi->dev->ctrl.rd_bit_order = 1;
}
SPI_MUTEX_UNLOCK();
}
static void _on_apb_change(void *arg, apb_change_ev_t ev_type, uint32_t old_apb, uint32_t new_apb) {
spi_t *spi = (spi_t *)arg;
if (ev_type == APB_BEFORE_CHANGE) {
SPI_MUTEX_LOCK();
while (spi->dev->cmd.usr);
} else {
spi->dev->clock.val = spiFrequencyToClockDiv(old_apb / ((spi->dev->clock.clkdiv_pre + 1) * (spi->dev->clock.clkcnt_n + 1)));
SPI_MUTEX_UNLOCK();
}
}
static void spiInitBus(spi_t *spi) {
#if CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32
spi->dev->slave.trans_done = 0;
#endif
spi->dev->slave.val = 0;
#if CONFIG_IDF_TARGET_ESP32
spi->dev->pin.val = 0;
#else
spi->dev->misc.val = 0;
#endif
spi->dev->user.val = 0;
spi->dev->user1.val = 0;
spi->dev->ctrl.val = 0;
#if CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32
spi->dev->ctrl1.val = 0;
spi->dev->ctrl2.val = 0;
#else
spi->dev->clk_gate.val = 0;
spi->dev->dma_conf.val = 0;
spi->dev->dma_conf.rx_afifo_rst = 1;
spi->dev->dma_conf.buf_afifo_rst = 1;
#endif
spi->dev->clock.val = 0;
}
void spiStopBus(spi_t *spi) {
if (!spi) {
return;
}
removeApbChangeCallback(spi, _on_apb_change);
SPI_MUTEX_LOCK();
spiInitBus(spi);
SPI_MUTEX_UNLOCK();
}
spi_t *spiStartBus(uint8_t spi_num, uint32_t clockDiv, uint8_t dataMode, uint8_t bitOrder) {
if (spi_num >= SPI_COUNT) {
return NULL;
}
perimanSetBusDeinit(ESP32_BUS_TYPE_SPI_MASTER_SCK, spiDetachBus_SCK);
perimanSetBusDeinit(ESP32_BUS_TYPE_SPI_MASTER_MISO, spiDetachBus_MISO);
perimanSetBusDeinit(ESP32_BUS_TYPE_SPI_MASTER_MOSI, spiDetachBus_MOSI);
perimanSetBusDeinit(ESP32_BUS_TYPE_SPI_MASTER_SS, spiDetachBus_SS);
spi_t *spi = &_spi_bus_array[spi_num];
#if !CONFIG_DISABLE_HAL_LOCKS
if (spi->lock == NULL) {
spi->lock = xSemaphoreCreateMutex();
if (spi->lock == NULL) {
return NULL;
}
}
#endif
#if CONFIG_IDF_TARGET_ESP32S2
if (spi_num == FSPI) {
DPORT_SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_SPI2_CLK_EN);
DPORT_CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_SPI2_RST);
} else if (spi_num == HSPI) {
DPORT_SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_SPI3_CLK_EN);
DPORT_CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_SPI3_RST);
} else {
DPORT_SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_SPI01_CLK_EN);
DPORT_CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_SPI01_RST);
}
#elif CONFIG_IDF_TARGET_ESP32S3
if (spi_num == FSPI) {
periph_ll_reset(PERIPH_SPI2_MODULE);
periph_ll_enable_clk_clear_rst(PERIPH_SPI2_MODULE);
} else if (spi_num == HSPI) {
periph_ll_reset(PERIPH_SPI3_MODULE);
periph_ll_enable_clk_clear_rst(PERIPH_SPI3_MODULE);
}
#elif CONFIG_IDF_TARGET_ESP32
if (spi_num == HSPI) {
DPORT_SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_SPI2_CLK_EN);
DPORT_CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_SPI2_RST);
} else if (spi_num == VSPI) {
DPORT_SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_SPI3_CLK_EN);
DPORT_CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_SPI3_RST);
} else {
DPORT_SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_SPI01_CLK_EN);
DPORT_CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_SPI01_RST);
}
#elif defined(__PERIPH_CTRL_ALLOW_LEGACY_API)
periph_ll_reset(PERIPH_SPI2_MODULE);
periph_ll_enable_clk_clear_rst(PERIPH_SPI2_MODULE);
#endif
SPI_MUTEX_LOCK();
spiInitBus(spi);
#if !defined(CONFIG_IDF_TARGET_ESP32) && !defined(CONFIG_IDF_TARGET_ESP32S2)
spi->dev->clk_gate.clk_en = 1;
spi->dev->clk_gate.mst_clk_sel = 1;
spi->dev->clk_gate.mst_clk_active = 1;
#if defined(CONFIG_IDF_TARGET_ESP32S3) || defined(CONFIG_IDF_TARGET_ESP32C2) || defined(CONFIG_IDF_TARGET_ESP32C3)
spi->dev->dma_conf.tx_seg_trans_clr_en = 1;
spi->dev->dma_conf.rx_seg_trans_clr_en = 1;
spi->dev->dma_conf.dma_seg_trans_en = 0;
#endif
#endif
spi->dev->user.usr_mosi = 1;
spi->dev->user.usr_miso = 1;
spi->dev->user.doutdin = 1;
int i;
for (i = 0; i < 16; i++) {
#if CONFIG_IDF_TARGET_ESP32C6 || CONFIG_IDF_TARGET_ESP32H2 || CONFIG_IDF_TARGET_ESP32P4
spi->dev->data_buf[i].val = 0x00000000;
#else
spi->dev->data_buf[i] = 0x00000000;
#endif
}
SPI_MUTEX_UNLOCK();
spiSetDataMode(spi, dataMode);
spiSetBitOrder(spi, bitOrder);
spiSetClockDiv(spi, clockDiv);
addApbChangeCallback(spi, _on_apb_change);
return spi;
}
void spiWaitReady(spi_t *spi) {
if (!spi) {
return;
}
while (spi->dev->cmd.usr);
}
#if CONFIG_IDF_TARGET_ESP32S2
#define usr_mosi_dbitlen usr_mosi_bit_len
#define usr_miso_dbitlen usr_miso_bit_len
#elif !defined(CONFIG_IDF_TARGET_ESP32)
#define usr_mosi_dbitlen ms_data_bitlen
#define usr_miso_dbitlen ms_data_bitlen
#define mosi_dlen ms_dlen
#define miso_dlen ms_dlen
#endif
void spiWrite(spi_t *spi, const uint32_t *data, uint8_t len) {
if (!spi) {
return;
}
int i;
if (len > 16) {
len = 16;
}
SPI_MUTEX_LOCK();
spi->dev->mosi_dlen.usr_mosi_dbitlen = (len * 32) - 1;
#if CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32
spi->dev->miso_dlen.usr_miso_dbitlen = 0;
#endif
for (i = 0; i < len; i++) {
#if CONFIG_IDF_TARGET_ESP32C6 || CONFIG_IDF_TARGET_ESP32H2 || CONFIG_IDF_TARGET_ESP32P4
spi->dev->data_buf[i].val = data[i];
#else
spi->dev->data_buf[i] = data[i];
#endif
}
#if !defined(CONFIG_IDF_TARGET_ESP32) && !defined(CONFIG_IDF_TARGET_ESP32S2)
spi->dev->cmd.update = 1;
while (spi->dev->cmd.update);
#endif
spi->dev->cmd.usr = 1;
while (spi->dev->cmd.usr);
SPI_MUTEX_UNLOCK();
}
void spiTransfer(spi_t *spi, uint32_t *data, uint8_t len) {
if (!spi) {
return;
}
int i;
if (len > 16) {
len = 16;
}
SPI_MUTEX_LOCK();
spi->dev->mosi_dlen.usr_mosi_dbitlen = (len * 32) - 1;
spi->dev->miso_dlen.usr_miso_dbitlen = (len * 32) - 1;
for (i = 0; i < len; i++) {
#if CONFIG_IDF_TARGET_ESP32C6 || CONFIG_IDF_TARGET_ESP32H2 || CONFIG_IDF_TARGET_ESP32P4
spi->dev->data_buf[i].val = data[i];
#else
spi->dev->data_buf[i] = data[i];
#endif
}
#if !defined(CONFIG_IDF_TARGET_ESP32) && !defined(CONFIG_IDF_TARGET_ESP32S2)
spi->dev->cmd.update = 1;
while (spi->dev->cmd.update);
#endif
spi->dev->cmd.usr = 1;
while (spi->dev->cmd.usr);
for (i = 0; i < len; i++) {
#if CONFIG_IDF_TARGET_ESP32C6 || CONFIG_IDF_TARGET_ESP32H2 || CONFIG_IDF_TARGET_ESP32P4
data[i] = spi->dev->data_buf[i].val;
#else
data[i] = spi->dev->data_buf[i];
#endif
}
SPI_MUTEX_UNLOCK();
}
void spiWriteByte(spi_t *spi, uint8_t data) {
if (!spi) {
return;
}
SPI_MUTEX_LOCK();
spi->dev->mosi_dlen.usr_mosi_dbitlen = 7;
#if CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32
spi->dev->miso_dlen.usr_miso_dbitlen = 0;
#endif
#if CONFIG_IDF_TARGET_ESP32C6 || CONFIG_IDF_TARGET_ESP32H2 || CONFIG_IDF_TARGET_ESP32P4
spi->dev->data_buf[0].val = data;
#else
spi->dev->data_buf[0] = data;
#endif
#if !defined(CONFIG_IDF_TARGET_ESP32) && !defined(CONFIG_IDF_TARGET_ESP32S2)
spi->dev->cmd.update = 1;
while (spi->dev->cmd.update);
#endif
spi->dev->cmd.usr = 1;
while (spi->dev->cmd.usr);
SPI_MUTEX_UNLOCK();
}
uint8_t spiTransferByte(spi_t *spi, uint8_t data) {
if (!spi) {
return 0;
}
SPI_MUTEX_LOCK();
spi->dev->mosi_dlen.usr_mosi_dbitlen = 7;
spi->dev->miso_dlen.usr_miso_dbitlen = 7;
#if CONFIG_IDF_TARGET_ESP32C6 || CONFIG_IDF_TARGET_ESP32H2 || CONFIG_IDF_TARGET_ESP32P4
spi->dev->data_buf[0].val = data;
#else
spi->dev->data_buf[0] = data;
#endif
#if !defined(CONFIG_IDF_TARGET_ESP32) && !defined(CONFIG_IDF_TARGET_ESP32S2)
spi->dev->cmd.update = 1;
while (spi->dev->cmd.update);
#endif
spi->dev->cmd.usr = 1;
while (spi->dev->cmd.usr);
#if CONFIG_IDF_TARGET_ESP32C6 || CONFIG_IDF_TARGET_ESP32H2 || CONFIG_IDF_TARGET_ESP32P4
data = spi->dev->data_buf[0].val & 0xFF;
#else
data = spi->dev->data_buf[0] & 0xFF;
#endif
SPI_MUTEX_UNLOCK();
return data;
}
static uint32_t __spiTranslate32(uint32_t data) {
union {
uint32_t l;
uint8_t b[4];
} out;
out.l = data;
return out.b[3] | (out.b[2] << 8) | (out.b[1] << 16) | (out.b[0] << 24);
}
void spiWriteWord(spi_t *spi, uint16_t data) {
if (!spi) {
return;
}
if (!spi->dev->ctrl.wr_bit_order) {
data = (data >> 8) | (data << 8);
}
SPI_MUTEX_LOCK();
spi->dev->mosi_dlen.usr_mosi_dbitlen = 15;
#if CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32
spi->dev->miso_dlen.usr_miso_dbitlen = 0;
#endif
#if CONFIG_IDF_TARGET_ESP32C6 || CONFIG_IDF_TARGET_ESP32H2 || CONFIG_IDF_TARGET_ESP32P4
spi->dev->data_buf[0].val = data;
#else
spi->dev->data_buf[0] = data;
#endif
#if !defined(CONFIG_IDF_TARGET_ESP32) && !defined(CONFIG_IDF_TARGET_ESP32S2)
spi->dev->cmd.update = 1;
while (spi->dev->cmd.update);
#endif
spi->dev->cmd.usr = 1;
while (spi->dev->cmd.usr);
SPI_MUTEX_UNLOCK();
}
uint16_t spiTransferWord(spi_t *spi, uint16_t data) {
if (!spi) {
return 0;
}
if (!spi->dev->ctrl.wr_bit_order) {
data = (data >> 8) | (data << 8);
}
SPI_MUTEX_LOCK();
spi->dev->mosi_dlen.usr_mosi_dbitlen = 15;
spi->dev->miso_dlen.usr_miso_dbitlen = 15;
#if CONFIG_IDF_TARGET_ESP32C6 || CONFIG_IDF_TARGET_ESP32H2 || CONFIG_IDF_TARGET_ESP32P4
spi->dev->data_buf[0].val = data;
#else
spi->dev->data_buf[0] = data;
#endif
#if !defined(CONFIG_IDF_TARGET_ESP32) && !defined(CONFIG_IDF_TARGET_ESP32S2)
spi->dev->cmd.update = 1;
while (spi->dev->cmd.update);
#endif
spi->dev->cmd.usr = 1;
while (spi->dev->cmd.usr);
#if CONFIG_IDF_TARGET_ESP32C6 || CONFIG_IDF_TARGET_ESP32H2 || CONFIG_IDF_TARGET_ESP32P4
data = spi->dev->data_buf[0].val;
#else
data = spi->dev->data_buf[0];
#endif
SPI_MUTEX_UNLOCK();
if (!spi->dev->ctrl.rd_bit_order) {
data = (data >> 8) | (data << 8);
}
return data;
}
void spiWriteLong(spi_t *spi, uint32_t data) {
if (!spi) {
return;
}
if (!spi->dev->ctrl.wr_bit_order) {
data = __spiTranslate32(data);
}
SPI_MUTEX_LOCK();
spi->dev->mosi_dlen.usr_mosi_dbitlen = 31;
#if CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32
spi->dev->miso_dlen.usr_miso_dbitlen = 0;
#endif
#if CONFIG_IDF_TARGET_ESP32C6 || CONFIG_IDF_TARGET_ESP32H2 || CONFIG_IDF_TARGET_ESP32P4
spi->dev->data_buf[0].val = data;
#else
spi->dev->data_buf[0] = data;
#endif
#if !defined(CONFIG_IDF_TARGET_ESP32) && !defined(CONFIG_IDF_TARGET_ESP32S2)
spi->dev->cmd.update = 1;
while (spi->dev->cmd.update);
#endif
spi->dev->cmd.usr = 1;
while (spi->dev->cmd.usr);
SPI_MUTEX_UNLOCK();
}
uint32_t spiTransferLong(spi_t *spi, uint32_t data) {
if (!spi) {
return 0;
}
if (!spi->dev->ctrl.wr_bit_order) {
data = __spiTranslate32(data);
}
SPI_MUTEX_LOCK();
spi->dev->mosi_dlen.usr_mosi_dbitlen = 31;
spi->dev->miso_dlen.usr_miso_dbitlen = 31;
#if CONFIG_IDF_TARGET_ESP32C6 || CONFIG_IDF_TARGET_ESP32H2 || CONFIG_IDF_TARGET_ESP32P4
spi->dev->data_buf[0].val = data;
#else
spi->dev->data_buf[0] = data;
#endif
#if !defined(CONFIG_IDF_TARGET_ESP32) && !defined(CONFIG_IDF_TARGET_ESP32S2)
spi->dev->cmd.update = 1;
while (spi->dev->cmd.update);
#endif
spi->dev->cmd.usr = 1;
while (spi->dev->cmd.usr);
#if CONFIG_IDF_TARGET_ESP32C6 || CONFIG_IDF_TARGET_ESP32H2 || CONFIG_IDF_TARGET_ESP32P4
data = spi->dev->data_buf[0].val;
#else
data = spi->dev->data_buf[0];
#endif
SPI_MUTEX_UNLOCK();
if (!spi->dev->ctrl.rd_bit_order) {
data = __spiTranslate32(data);
}
return data;
}
static void __spiTransferBytes(spi_t *spi, const uint8_t *data, uint8_t *out, uint32_t bytes) {
if (!spi) {
return;
}
uint32_t i;
if (bytes > 64) {
bytes = 64;
}
uint32_t words = (bytes + 3) / 4; //16 max
uint32_t wordsBuf[16] = {
0,
};
uint8_t *bytesBuf = (uint8_t *)wordsBuf;
if (data) {
memcpy(bytesBuf, data, bytes); //copy data to buffer
} else {
memset(bytesBuf, 0xFF, bytes);
}
spi->dev->mosi_dlen.usr_mosi_dbitlen = ((bytes * 8) - 1);
spi->dev->miso_dlen.usr_miso_dbitlen = ((bytes * 8) - 1);
for (i = 0; i < words; i++) {
#if CONFIG_IDF_TARGET_ESP32C6 || CONFIG_IDF_TARGET_ESP32H2 || CONFIG_IDF_TARGET_ESP32P4
spi->dev->data_buf[i].val = wordsBuf[i]; //copy buffer to spi fifo
#else
spi->dev->data_buf[i] = wordsBuf[i]; //copy buffer to spi fifo
#endif
}
#if !defined(CONFIG_IDF_TARGET_ESP32) && !defined(CONFIG_IDF_TARGET_ESP32S2)
spi->dev->cmd.update = 1;
while (spi->dev->cmd.update);
#endif