Files
DCU_APP/GD32E508_DCU_APP/device/spi/app_spi_command.cpp
T
cbb b171767023 feat(ethercat): 添加EtherCAT从站功能支持并优化同步机制
- 添加CAN反馈和ID快照SPI命令文件
- 移除EXMC组件依赖,精简项目配置
- 添加RAM函数段链接脚本,优化Flash等待周期抖动
- 实现EscExmcBus类,提供16位并行总线访问LAN9252
- 实现EscLan9252驱动,支持寄存器和PDI内存访问
- 实现EthercatSlave类,采用三缓冲机制进行PDO数据交换
- 实现EthercatSync同步管理,支持SYNC0/SYNC1中断和定时器模式
- 添加ISR执行时间统计和诊断功能
- 分离周期路径和事件路径通知机制,避免RMW竞态
2026-06-29 01:51:02 +08:00

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/**
* @file app_spi_command.cpp
* @brief APP 运行期 SPI 链路与命令路由实现。
*
* 本模块现在只负责:
* - SPI0 从机链路初始化(GPIO/SPI/DMA/EXTI)
* - CS、DMA、中断驱动的帧接收与发送
* - 公共帧格式解析与应答构建
* - 业务命令的注册与分发
*
* 具体命令处理逻辑已经拆到独立的 `app_spi_cmd_*.cpp`,
* 通过 `registerHandler()` 注册进来,后续新增 SPI 业务时
* 只需要新增命令处理器,不再继续膨胀本文件。
*/
#include "device/spi/app_spi_command.h"
#include "device/spi/spi_command_handler.h"
#include "device/spi/app_spi_command_defs.h"
extern "C" {
#include "gd32e50x_exti.h"
}
#include "gd32e50x_gpio.h"
#include "gd32e50x_misc.h"
#include "gd32e50x_rcu.h"
#include "gd32e50x_dma.h"
#include "gd32e50x_spi.h"
#include "sys/config.h"
#include "sys/critical.h"
#include "sys/task_manager.h"
#include "sys/ota_boot_request.h"
#include "sys/systick.h"
#include "main.h"
#include <cstdio>
#include <cstring>
/* ============================================================
* 本地别名:保持当前实现文件内部风格不变
* ============================================================ */
static constexpr uint8_t kSof = SpiDefs::kSof;
static constexpr uint8_t kTypeBootReq = SpiDefs::kTypeBootReq;
static constexpr uint8_t kTypeCanSend = SpiDefs::kTypeCanSend;
static constexpr uint8_t kTypeOtaReq = SpiDefs::kTypeOtaReq;
static constexpr uint8_t kTypeAppPing = SpiDefs::kTypeAppPing;
static constexpr uint8_t kTypeOtaData = SpiDefs::kTypeOtaData;
static constexpr uint8_t kTypeOtaCancel = SpiDefs::kTypeOtaCancel;
static constexpr uint8_t kRspAck = SpiDefs::kRspAck;
static constexpr uint8_t kRspWait = SpiDefs::kRspWait;
static constexpr uint8_t kRspError = SpiDefs::kRspError;
static constexpr uint16_t kFrameOverhead = SpiDefs::kFrameOverhead;
/* DMA 配置(与 BOOT SpiOta 一致:DMA0_CH2 用于 SPI0 TX) */
#define SPI_TX_DMA_PERIPH DMA0
#define SPI_TX_DMA_CH DMA_CH2
static void startSpiTxDma(const uint8_t *buf, uint16_t len)
{
DMA_CHCTL(SPI_TX_DMA_PERIPH, SPI_TX_DMA_CH) &= ~DMA_CHXCTL_CHEN;
DMA_INTC(SPI_TX_DMA_PERIPH) |= DMA_FLAG_ADD(DMA_CHINTF_RESET_VALUE, SPI_TX_DMA_CH);
DMA_CHMADDR(SPI_TX_DMA_PERIPH, SPI_TX_DMA_CH) = (uint32_t)buf;
DMA_CHCNT(SPI_TX_DMA_PERIPH, SPI_TX_DMA_CH) = len;
DMA_CHCTL(SPI_TX_DMA_PERIPH, SPI_TX_DMA_CH) |= DMA_CHXCTL_CHEN;
}
static bool isAllBytesValue(const uint8_t *data, uint8_t len, uint8_t value)
{
if (!data || len == 0U) {
return false;
}
for (uint8_t i = 0U; i < len; ++i) {
if (data[i] != value) {
return false;
}
}
return true;
}
static bool shouldIgnoreTransaction(const uint8_t *data, uint8_t len)
{
if (!data || len == 0U) {
return true;
}
if (isAllBytesValue(data, len, 0xFFU) || isAllBytesValue(data, len, 0x00U)) {
return true;
}
/* APP 侧只接受两类事务:
* 1) 旧式单字节 0xB0
* 2) 完整协议帧(至少 5 字节)
* 短于 5 字节且不是 0xB0 的事务只能是启动切换期的残包,直接忽略。 */
return (len < kFrameOverhead) &&
!(len == 1U && data[0] == CONFIG_SPI_APP_OTA_BOOT_CMD);
}
static bool isFlashRelatedFrame(uint8_t frame_type)
{
switch (frame_type) {
case kTypeOtaReq:
case kTypeOtaData:
case kTypeOtaCancel:
case kTypeBootReq:
return true;
default:
return false;
}
}
/* ============================================================
* CRC8 / 帧构建 / 帧解析(与 BOOT SpiOta 一致)
* ============================================================ */
static uint8_t spi_crc8(const uint8_t *data, uint16_t len)
{
uint8_t crc = 0x00U;
for (uint16_t i = 0U; i < len; ++i) {
crc ^= data[i];
}
return crc;
}
static bool spi_build_frame(uint8_t type, const uint8_t *payload, uint16_t payload_len,
uint8_t *out, uint16_t *out_len)
{
if (!out || !out_len) { return false; }
uint16_t total = (uint16_t)(kFrameOverhead + payload_len);
if (total > AppSpiCommand::kTxBufSize) { return false; }
out[0] = kSof;
out[1] = type;
out[2] = (uint8_t)(payload_len & 0xFFU);
out[3] = (uint8_t)((payload_len >> 8) & 0xFFU);
if (payload && payload_len > 0U) {
memcpy(&out[4], payload, payload_len);
}
out[4 + payload_len] = spi_crc8(out, (uint16_t)(4U + payload_len));
*out_len = total;
return true;
}
static bool spi_try_parse_frame(const uint8_t *frame, uint16_t frame_len,
uint8_t *type, const uint8_t **payload, uint16_t *payload_len)
{
if (!frame || !type || !payload || !payload_len) { return false; }
/* 兼容首字节延迟:在帧头前面可能出现若干 0xFF / 0x00 残留字节,
* 搜索到第一个 kSof 后尝试按合法帧长度校验 CRC。 */
uint16_t s = 0U;
while (s < frame_len && frame[s] != kSof) { ++s; }
if (s > 0U && s < frame_len) {
const uint16_t shifted_len = (uint16_t)(frame_len - s);
if (shifted_len >= kFrameOverhead) {
const uint16_t len_field = (uint16_t)frame[s + 2U] | ((uint16_t)frame[s + 3U] << 8);
const uint16_t expected = (uint16_t)(kFrameOverhead + len_field);
if (shifted_len >= expected &&
spi_crc8(&frame[s], (uint16_t)(4U + len_field)) == frame[s + 4U + len_field]) {
*type = frame[s + 1U];
*payload = &frame[s + 4U];
*payload_len = len_field;
return true;
}
}
}
if (frame_len < kFrameOverhead) { return false; }
if (frame[0] != kSof) { return false; }
uint16_t len = (uint16_t)frame[2] | ((uint16_t)frame[3] << 8);
uint16_t expected = (uint16_t)(kFrameOverhead + len);
if (frame_len < expected) { return false; }
if (spi_crc8(frame, (uint16_t)(4U + len)) != frame[4U + len]) { return false; }
*type = frame[1];
*payload = &frame[4];
*payload_len = len;
return true;
}
/* ============================================================
* 调试日志辅助
* ============================================================ */
void AppSpiCommand::postLog(const char *msg)
{
#if (CONFIG_SPI_APP_LOG_ENABLE != 0)
if (!msg) return;
snprintf(m_logBuf, kLogBufSize, "[SPI-APP] %s", msg);
m_logPending = true;
#else
(void)msg;
#endif
}
void AppSpiCommand::postLogFmt(const char *fmt, uint8_t val)
{
#if (CONFIG_SPI_APP_LOG_ENABLE != 0)
if (!fmt) return;
snprintf(m_logBuf, kLogBufSize, fmt, val);
m_logPending = true;
#else
(void)fmt;
(void)val;
#endif
}
void AppSpiCommand::buildResponse(uint8_t *tx_buf, uint16_t tx_buf_size,
uint16_t *tx_len, uint8_t rsp_type,
const uint8_t *payload, uint16_t payload_len)
{
if (!tx_buf || !tx_len || tx_buf_size == 0U) {
return;
}
uint16_t built_len = 0U;
const bool ok = spi_build_frame(rsp_type, payload, payload_len, tx_buf, &built_len);
if (ok) {
*tx_len = built_len;
} else {
uint8_t err = 0xEEU;
(void)spi_build_frame(kRspError, &err, 1U, tx_buf, &built_len);
*tx_len = built_len;
}
}
/* ============================================================
* 硬件配置(与 BOOT 完全一致)
* ============================================================ */
void AppSpiCommand::configureGpio()
{
rcu_periph_clock_enable(RCU_GPIOA);
rcu_periph_clock_enable(RCU_GPIOB);
rcu_periph_clock_enable(RCU_AF);
gpio_pin_remap_config(GPIO_SPI0_REMAP, ENABLE);
gpio_pin_remap_config(GPIO_SWJ_SWDPENABLE_REMAP, ENABLE);
gpio_init(GPIOB, GPIO_MODE_IN_FLOATING, GPIO_OSPEED_50MHZ, GPIO_PIN_3 | GPIO_PIN_5);
gpio_init(GPIOB, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_4);
gpio_init(GPIOA, GPIO_MODE_IPU, GPIO_OSPEED_50MHZ, GPIO_PIN_15);
}
void AppSpiCommand::configureSpi0()
{
rcu_periph_clock_enable(RCU_SPI0);
spi_i2s_deinit(SPI0);
spi_parameter_struct spi_init_struct;
spi_struct_para_init(&spi_init_struct);
spi_init_struct.device_mode = SPI_SLAVE;
spi_init_struct.trans_mode = SPI_TRANSMODE_FULLDUPLEX;
spi_init_struct.frame_size = SPI_FRAMESIZE_8BIT;
spi_init_struct.nss = SPI_NSS_SOFT;
spi_init_struct.endian = SPI_ENDIAN_MSB;
spi_init_struct.clock_polarity_phase = SPI_CK_PL_LOW_PH_1EDGE;
spi_init_struct.prescale = SPI_PSC_8;
spi_init(SPI0, &spi_init_struct);
spi_nss_internal_low(SPI0);
(void)spi_i2s_data_receive(SPI0);
spi_i2s_data_transmit(SPI0, 0xFFU);
spi_i2s_interrupt_enable(SPI0, SPI_I2S_INT_RBNE);
spi_i2s_interrupt_enable(SPI0, SPI_I2S_INT_ERR);
spi_i2s_interrupt_disable(SPI0, SPI_I2S_INT_TBE);
nvic_irq_enable(SPI0_IRQn, CONFIG_IRQ_PREEMPT_SPI_USART, 0U);
spi_enable(SPI0);
}
void AppSpiCommand::configureDma()
{
rcu_periph_clock_enable(RCU_DMA0);
dma_deinit(SPI_TX_DMA_PERIPH, SPI_TX_DMA_CH);
dma_parameter_struct dma_cfg;
dma_struct_para_init(&dma_cfg);
dma_cfg.periph_addr = (uint32_t)(SPI0 + 0x0CU); /* SPI0_DATA 寄存器 */
dma_cfg.periph_width = DMA_PERIPHERAL_WIDTH_8BIT;
dma_cfg.memory_addr = (uint32_t)m_txBuf;
dma_cfg.memory_width = DMA_MEMORY_WIDTH_8BIT;
dma_cfg.number = 0U;
dma_cfg.priority = DMA_PRIORITY_HIGH;
dma_cfg.periph_inc = DMA_PERIPH_INCREASE_DISABLE;
dma_cfg.memory_inc = DMA_MEMORY_INCREASE_ENABLE;
dma_cfg.direction = DMA_MEMORY_TO_PERIPHERAL;
dma_init(SPI_TX_DMA_PERIPH, SPI_TX_DMA_CH, &dma_cfg);
dma_circulation_disable(SPI_TX_DMA_PERIPH, SPI_TX_DMA_CH);
dma_channel_disable(SPI_TX_DMA_PERIPH, SPI_TX_DMA_CH);
}
void AppSpiCommand::configureExti()
{
gpio_exti_source_select(GPIO_PORT_SOURCE_GPIOA, GPIO_PIN_SOURCE_15);
exti_init(EXTI_15, EXTI_INTERRUPT, EXTI_TRIG_BOTH);
exti_interrupt_enable(EXTI_15);
exti_interrupt_flag_clear(EXTI_15);
nvic_irq_enable(EXTI10_15_IRQn, CONFIG_IRQ_PREEMPT_SPI_USART, 1U);
}
/* ============================================================
* 默认命令注册入口(由各 app_spi_cmd_*.cpp 提供)
* ============================================================ */
extern void registerSpiBootRequestCommand(AppSpiCommand &bus);
extern void registerSpiOtaWaitCommand(AppSpiCommand &bus);
extern void registerSpiAppPingCommand(AppSpiCommand &bus);
extern void registerSpiCanBridgeCommand(AppSpiCommand &bus);
extern void registerSpiCanFeedbackCommand(AppSpiCommand &bus);
extern void registerSpiIdSnapshotCommand(AppSpiCommand &bus);
AppSpiCommand AppSpiCommandBus;
void AppSpiCommand::init()
{
m_csActive = false;
m_rxLen = 0U;
m_txLen = 0U;
m_txPos = 0U;
m_logPending = false;
m_commandCount = 0U;
memset(m_txBuf, 0xFF, sizeof(m_txBuf));
memset(m_logBuf, 0, sizeof(m_logBuf));
memset(m_commands, 0, sizeof(m_commands));
registerSpiBootRequestCommand(AppSpiCommandBus);
registerSpiOtaWaitCommand(AppSpiCommandBus);
registerSpiAppPingCommand(AppSpiCommandBus);
registerSpiCanBridgeCommand(AppSpiCommandBus);
registerSpiCanFeedbackCommand(AppSpiCommandBus);
registerSpiIdSnapshotCommand(AppSpiCommandBus);
configureGpio();
configureSpi0();
configureDma();
configureExti();
}
/* ============================================================
* 命令路由
* ============================================================ */
void AppSpiCommand::registerHandler(ISpiCommandHandler *handler)
{
if (!handler || m_commandCount >= kMaxCommands) {
return;
}
m_commands[m_commandCount++] = handler;
}
void AppSpiCommand::processCommand()
{
if (m_rxLen == 0U) {
return;
}
/* 尝试按协议帧解析 */
uint8_t frame_type = 0U;
const uint8_t *payload = nullptr;
uint16_t payload_len = 0U;
if (spi_try_parse_frame(m_rxBuf, m_rxLen, &frame_type, &payload, &payload_len)) {
if (CONFIG_SPI_APP_LOG_ENABLE != 0 && !isFlashRelatedFrame(frame_type)) {
postLogFmt("[SPI-APP] 收到非刷写 SPI type=0x%02X", frame_type);
}
/* 合法帧:按 TYPE 分发给已注册命令处理器 */
uint16_t tx_len = 0U;
bool handled = false;
SpiCommandContext ctx{};
ctx.frame_type = frame_type;
ctx.payload = payload;
ctx.payload_len = payload_len;
ctx.tx_buf = m_txBuf;
ctx.tx_buf_size = kTxBufSize;
ctx.tx_len = &tx_len;
for (uint8_t i = 0U; i < m_commandCount; ++i) {
ISpiCommandHandler *handler = m_commands[i];
if (handler && handler->canHandle(frame_type)) {
handler->handle(AppSpiCommandBus, ctx);
handled = true;
break;
}
}
if (!handled) {
postLogFmt("[SPI-APP] 未知 type=0x%02X → ERROR", frame_type);
uint8_t err = 0xEEU;
spi_build_frame(kRspError, &err, 1U, m_txBuf, &tx_len);
}
if (tx_len == 0U) {
/* 兜底:避免残留上一次应答帧 */
uint8_t err = 0xEEU;
spi_build_frame(kRspError, &err, 1U, m_txBuf, &tx_len);
}
m_txLen = (uint8_t)tx_len;
m_txPos = 0U;
} else {
/* 非标准帧:保留旧式单字节 0xB0 通道,后续新命令建议走注册式帧协议 */
const uint8_t first_valid = m_rxBuf[0U];
if (first_valid == CONFIG_SPI_APP_OTA_BOOT_CMD) {
postLog("旧式0xB0 → 进BOOT");
uint16_t tx_len_legacy = 0U;
SpiCommandContext ctx{};
ctx.frame_type = first_valid;
ctx.payload = nullptr;
ctx.payload_len = 0U;
ctx.tx_buf = m_txBuf;
ctx.tx_buf_size = kTxBufSize;
ctx.tx_len = &tx_len_legacy;
bool handled = false;
for (uint8_t i = 0U; i < m_commandCount; ++i) {
ISpiCommandHandler *handler = m_commands[i];
if (handler && handler->canHandle(first_valid)) {
handler->handle(AppSpiCommandBus, ctx);
handled = true;
break;
}
}
if (!handled) {
const bool ok = OtaBootRequest::requestEnterBoot();
uint8_t ack = ok ? CONFIG_SPI_APP_OTA_BOOT_ACK_OK
: CONFIG_SPI_APP_OTA_BOOT_ACK_ERROR;
m_txBuf[0] = CONFIG_SPI_APP_OTA_BOOT_CMD;
m_txBuf[1] = ack;
m_txBuf[2] = 0x4FU;
m_txBuf[3] = 0x54U;
tx_len_legacy = 4U;
if (ok) {
TaskManager::set(1UL << TASK_HEARTBEAT);
}
}
m_txLen = (uint8_t)tx_len_legacy;
m_txPos = 0U;
} else {
/* 无法识别 */
postLogFmt("[SPI-APP] 非协议 0x%02X → ERROR", first_valid);
uint16_t tx_len = 0U;
uint8_t err = 0xEEU;
spi_build_frame(kRspError, &err, 1U, m_txBuf, &tx_len);
m_txLen = (uint8_t)tx_len;
m_txPos = 0U;
}
}
if (m_logPending) {
/* 置位 TASK_SPI_LOG,唤醒主循环立刻打印日志 */
TaskManager::set(1UL << TASK_SPI_LOG);
}
}
/* ============================================================
* 主循环轮询:打印延迟日志
* ============================================================ */
void AppSpiCommand::poll()
{
char log_copy[kLogBufSize] = {};
bool has_log = false;
uint32_t save = RT_CRITICAL_SAVE();
if (m_logPending) {
memcpy(log_copy, m_logBuf, sizeof(log_copy));
m_logPending = false;
has_log = true;
}
RT_CRITICAL_RESTORE(save);
if (has_log) {
printf("%s\r\n", log_copy);
}
}
void AppSpiCommand::processPendingCommand()
{
if (!m_cmdPending) {
return;
}
m_cmdPending = false;
processCommand();
}
/* ============================================================
* CS 边沿处理
* ============================================================ */
void AppSpiCommand::onCsAssert()
{
if (m_csActive) {
return;
}
m_csActive = true;
m_rxLen = 0U;
m_txPos = 0U;
/* 停止 DMA 并清理旧状态 */
DMA_CHCTL(SPI_TX_DMA_PERIPH, SPI_TX_DMA_CH) &= ~DMA_CHXCTL_CHEN;
spi_dma_disable(SPI0, SPI_DMA_TRANSMIT);
/* 与 BOOT 一致:清除 SPI 双缓冲中的残留数据 */
spi_i2s_data_transmit(SPI0, 0xFFU);
if (spi_i2s_flag_get(SPI0, SPI_FLAG_TBE) != RESET) {
spi_i2s_data_transmit(SPI0, 0xFFU);
}
/* 清除错误标志 */
if (spi_i2s_interrupt_flag_get(SPI0, SPI_I2S_INT_FLAG_RXORERR) != RESET) {
(void)spi_i2s_data_receive(SPI0);
}
if (spi_i2s_interrupt_flag_get(SPI0, SPI_I2S_INT_FLAG_FERR) != RESET) {
spi_i2s_format_error_clear(SPI0, SPI_FLAG_FERR);
}
/* 启动 DMA 发送响应帧(与 BOOT 完全一致) */
if (m_txLen > 0U) {
spi_dma_enable(SPI0, SPI_DMA_TRANSMIT);
startSpiTxDma(m_txBuf, m_txLen);
} else {
/* 无响应时发送全 0xFF 填充 */
spi_dma_enable(SPI0, SPI_DMA_TRANSMIT);
startSpiTxDma(m_txBuf, kTxBufSize);
}
}
void AppSpiCommand::onCsRelease()
{
if (!m_csActive) {
return;
}
m_csActive = false;
/* 停止 DMA */
DMA_CHCTL(SPI_TX_DMA_PERIPH, SPI_TX_DMA_CH) &= ~DMA_CHXCTL_CHEN;
spi_dma_disable(SPI0, SPI_DMA_TRANSMIT);
if (spi_i2s_interrupt_flag_get(SPI0, SPI_I2S_INT_FLAG_RBNE) != RESET) {
uint8_t last_byte = (uint8_t)(spi_i2s_data_receive(SPI0) & 0xFFU);
if (m_rxLen < sizeof(m_rxBuf)) {
m_rxBuf[m_rxLen++] = last_byte;
}
}
if (shouldIgnoreTransaction(m_rxBuf, m_rxLen)) {
m_rxLen = 0U;
return;
}
m_cmdPending = true;
TaskManager::set(1UL << TASK_SPI_CMD_PROCESS);
}
/* ============================================================
* SPI0 / EXTI 中断处理
* ============================================================ */
void AppSpiCommand::onInterrupt()
{
if (spi_i2s_interrupt_flag_get(SPI0, SPI_I2S_INT_FLAG_RBNE) != RESET) {
if (!m_csActive && gpio_input_bit_get(GPIOA, GPIO_PIN_15) == RESET) {
onCsAssert();
}
uint8_t byte = (uint8_t)(spi_i2s_data_receive(SPI0) & 0xFFU);
if (m_csActive && m_rxLen < sizeof(m_rxBuf)) {
m_rxBuf[m_rxLen++] = byte;
}
}
/* TBE 已由 DMA 替代,不再处理 */
if (spi_i2s_interrupt_flag_get(SPI0, SPI_I2S_INT_FLAG_RXORERR) != RESET) {
(void)spi_i2s_data_receive(SPI0);
m_rxLen = 0U;
}
if (spi_i2s_interrupt_flag_get(SPI0, SPI_I2S_INT_FLAG_FERR) != RESET) {
spi_i2s_format_error_clear(SPI0, SPI_FLAG_FERR);
}
}
void AppSpiCommand::onCsExtiInterrupt()
{
if (exti_interrupt_flag_get(EXTI_15) != RESET) {
exti_interrupt_flag_clear(EXTI_15);
if (gpio_input_bit_get(GPIOA, GPIO_PIN_15) == RESET) {
onCsAssert();
} else {
onCsRelease();
}
}
}
extern "C" void SPI0_IRQHandler(void)
{
AppSpiCommandBus.onInterrupt();
}
extern "C" void EXTI10_15_IRQHandler(void)
{
AppSpiCommandBus.onCsExtiInterrupt();
}