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1 files changed, 328 insertions, 0 deletions

diff --git a/Marlin/src/HAL/STM32/Sd2Card_sdio_stm32duino.cpp b/Marlin/src/HAL/STM32/Sd2Card_sdio_stm32duino.cpp
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+++ b/Marlin/src/HAL/STM32/Sd2Card_sdio_stm32duino.cpp
@@ -0,0 +1,328 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#if defined(ARDUINO_ARCH_STM32) && !defined(STM32GENERIC)
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(SDIO_SUPPORT)
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#if NONE(STM32F103xE, STM32F103xG, STM32F4xx, STM32F7xx)
+  #error "ERROR - Only STM32F103xE, STM32F103xG, STM32F4xx or STM32F7xx CPUs supported"
+#endif
+
+#if HAS_SD_HOST_DRIVE
+
+  // use USB drivers
+
+  extern "C" { int8_t SD_MSC_Read(uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len);
+               int8_t SD_MSC_Write(uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len);
+               extern SD_HandleTypeDef hsd;
+  }
+
+  bool SDIO_Init() {
+    return hsd.State == HAL_SD_STATE_READY;  // return pass/fail status
+  }
+
+  bool SDIO_ReadBlock(uint32_t block, uint8_t *src) {
+    int8_t status = SD_MSC_Read(0, (uint8_t*)src, block, 1); // read one 512 byte block
+    return (bool) status;
+  }
+
+  bool SDIO_WriteBlock(uint32_t block, const uint8_t *src) {
+    int8_t status = SD_MSC_Write(0, (uint8_t*)src, block, 1); // write one 512 byte block
+    return (bool) status;
+  }
+
+#else // !USBD_USE_CDC_COMPOSITE
+
+  // use local drivers
+  #if defined(STM32F103xE) || defined(STM32F103xG)
+    #include <stm32f1xx_hal_rcc_ex.h>
+    #include <stm32f1xx_hal_sd.h>
+  #elif defined(STM32F4xx)
+    #include <stm32f4xx_hal_rcc.h>
+    #include <stm32f4xx_hal_dma.h>
+    #include <stm32f4xx_hal_gpio.h>
+    #include <stm32f4xx_hal_sd.h>
+  #elif defined(STM32F7xx)
+    #include <stm32f7xx_hal_rcc.h>
+    #include <stm32f7xx_hal_dma.h>
+    #include <stm32f7xx_hal_gpio.h>
+    #include <stm32f7xx_hal_sd.h>
+  #else
+    #error "ERROR - Only STM32F103xE, STM32F103xG, STM32F4xx or STM32F7xx CPUs supported"
+  #endif
+
+  SD_HandleTypeDef hsd;  // create SDIO structure
+
+  /*
+    SDIO_INIT_CLK_DIV is 118
+    SDIO clock frequency is 48MHz / (TRANSFER_CLOCK_DIV + 2)
+    SDIO init clock frequency should not exceed 400KHz = 48MHz / (118 + 2)
+
+    Default TRANSFER_CLOCK_DIV is 2 (118 / 40)
+    Default SDIO clock frequency is 48MHz / (2 + 2) = 12 MHz
+    This might be too fast for stable SDIO operations
+
+    MKS Robin board seems to have stable SDIO with BusWide 1bit and ClockDiv 8 i.e. 4.8MHz SDIO clock frequency
+    Additional testing is required as there are clearly some 4bit initialization problems
+  */
+
+  #ifndef USBD_OK
+    #define USBD_OK 0
+  #endif
+
+  // Target Clock, configurable. Default is 18MHz, from STM32F1
+  #ifndef SDIO_CLOCK
+    #define SDIO_CLOCK                         18000000       /* 18 MHz */
+  #endif
+
+  // SDIO retries, configurable. Default is 3, from STM32F1
+  #ifndef SDIO_READ_RETRIES
+    #define SDIO_READ_RETRIES                  3
+  #endif
+
+  // SDIO Max Clock (naming from STM Manual, don't change)
+  #define SDIOCLK 48000000
+
+  static uint32_t clock_to_divider(uint32_t clk) {
+    // limit the SDIO master clock to 8/3 of PCLK2. See STM32 Manuals
+    // Also limited to no more than 48Mhz (SDIOCLK).
+    const uint32_t pclk2 = HAL_RCC_GetPCLK2Freq();
+    clk = min(clk, (uint32_t)(pclk2 * 8 / 3));
+    clk = min(clk, (uint32_t)SDIOCLK);
+    // Round up divider, so we don't run the card over the speed supported,
+    // and subtract by 2, because STM32 will add 2, as written in the manual:
+    // SDIO_CK frequency = SDIOCLK / [CLKDIV + 2]
+    return pclk2 / clk + (pclk2 % clk != 0) - 2;
+  }
+
+  void go_to_transfer_speed() {
+    SD_InitTypeDef Init;
+
+    /* Default SDIO peripheral configuration for SD card initialization */
+    Init.ClockEdge           = hsd.Init.ClockEdge;
+    Init.ClockBypass         = hsd.Init.ClockBypass;
+    Init.ClockPowerSave      = hsd.Init.ClockPowerSave;
+    Init.BusWide             = hsd.Init.BusWide;
+    Init.HardwareFlowControl = hsd.Init.HardwareFlowControl;
+    Init.ClockDiv            = clock_to_divider(SDIO_CLOCK);
+
+    /* Initialize SDIO peripheral interface with default configuration */
+    SDIO_Init(hsd.Instance, Init);
+  }
+
+  void SD_LowLevel_Init(void) {
+    uint32_t tempreg;
+
+    __HAL_RCC_SDIO_CLK_ENABLE();
+    __HAL_RCC_GPIOC_CLK_ENABLE(); //enable GPIO clocks
+    __HAL_RCC_GPIOD_CLK_ENABLE(); //enable GPIO clocks
+
+    GPIO_InitTypeDef  GPIO_InitStruct;
+
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull = 1;  //GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
+
+    #if DISABLED(STM32F1xx)
+      GPIO_InitStruct.Alternate = GPIO_AF12_SDIO;
+    #endif
+
+    GPIO_InitStruct.Pin = GPIO_PIN_8 | GPIO_PIN_12;  // D0 & SCK
+    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
+
+    #if PINS_EXIST(SDIO_D1, SDIO_D2, SDIO_D3)  // define D1-D3 only if have a four bit wide SDIO bus
+      GPIO_InitStruct.Pin = GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11;  // D1-D3
+      HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
+    #endif
+
+    // Configure PD.02 CMD line
+    GPIO_InitStruct.Pin = GPIO_PIN_2;
+    HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
+
+    #if DISABLED(STM32F1xx)
+      // TODO: use __HAL_RCC_SDIO_RELEASE_RESET() and __HAL_RCC_SDIO_CLK_ENABLE();
+      RCC->APB2RSTR &= ~RCC_APB2RSTR_SDIORST_Msk;  // take SDIO out of reset
+      RCC->APB2ENR  |=  RCC_APB2RSTR_SDIORST_Msk;  // enable SDIO clock
+      // Enable the DMA2 Clock
+    #endif
+
+    //Initialize the SDIO (with initial <400Khz Clock)
+    tempreg = 0;  //Reset value
+    tempreg |= SDIO_CLKCR_CLKEN;  // Clock enabled
+    tempreg |= SDIO_INIT_CLK_DIV; // Clock Divider. Clock = 48000 / (118 + 2) = 400Khz
+    // Keep the rest at 0 => HW_Flow Disabled, Rising Clock Edge, Disable CLK ByPass, Bus Width = 0, Power save Disable
+    SDIO->CLKCR = tempreg;
+
+    // Power up the SDIO
+    SDIO_PowerState_ON(SDIO);
+  }
+
+  void HAL_SD_MspInit(SD_HandleTypeDef *hsd) { // application specific init
+    UNUSED(hsd);   // Prevent unused argument(s) compilation warning
+    __HAL_RCC_SDIO_CLK_ENABLE();  // turn on SDIO clock
+  }
+
+  bool SDIO_Init() {
+    uint8_t retryCnt = SDIO_READ_RETRIES;
+
+    bool status;
+    hsd.Instance = SDIO;
+    hsd.State = HAL_SD_STATE_RESET;
+
+    SD_LowLevel_Init();
+
+    uint8_t retry_Cnt = retryCnt;
+    for (;;) {
+      TERN_(USE_WATCHDOG, HAL_watchdog_refresh());
+      status = (bool) HAL_SD_Init(&hsd);
+      if (!status) break;
+      if (!--retry_Cnt) return false;   // return failing status if retries are exhausted
+    }
+
+    go_to_transfer_speed();
+
+    #if PINS_EXIST(SDIO_D1, SDIO_D2, SDIO_D3) // go to 4 bit wide mode if pins are defined
+      retry_Cnt = retryCnt;
+      for (;;) {
+        TERN_(USE_WATCHDOG, HAL_watchdog_refresh());
+        if (!HAL_SD_ConfigWideBusOperation(&hsd, SDIO_BUS_WIDE_4B)) break;  // some cards are only 1 bit wide so a pass here is not required
+        if (!--retry_Cnt) break;
+      }
+      if (!retry_Cnt) {  // wide bus failed, go back to one bit wide mode
+        hsd.State = (HAL_SD_StateTypeDef) 0;  // HAL_SD_STATE_RESET
+        SD_LowLevel_Init();
+        retry_Cnt = retryCnt;
+        for (;;) {
+          TERN_(USE_WATCHDOG, HAL_watchdog_refresh());
+          status = (bool) HAL_SD_Init(&hsd);
+          if (!status) break;
+          if (!--retry_Cnt) return false;   // return failing status if retries are exhausted
+        }
+      }
+    #endif
+
+    return true;
+  }
+  /*
+  void init_SDIO_pins(void) {
+    GPIO_InitTypeDef GPIO_InitStruct = {0};
+
+    // SDIO GPIO Configuration
+    // PC8     ------> SDIO_D0
+    // PC12    ------> SDIO_CK
+    // PD2     ------> SDIO_CMD
+
+    GPIO_InitStruct.Pin = GPIO_PIN_8;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+    GPIO_InitStruct.Alternate = GPIO_AF12_SDIO;
+    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
+
+    GPIO_InitStruct.Pin = GPIO_PIN_12;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+    GPIO_InitStruct.Alternate = GPIO_AF12_SDIO;
+    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
+
+    GPIO_InitStruct.Pin = GPIO_PIN_2;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+    GPIO_InitStruct.Alternate = GPIO_AF12_SDIO;
+    HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
+  }
+  */
+  //bool SDIO_init() { return (bool) (SD_SDIO_Init() ? 1 : 0);}
+  //bool SDIO_Init_C() { return (bool) (SD_SDIO_Init() ? 1 : 0);}
+
+  bool SDIO_ReadBlock(uint32_t block, uint8_t *dst) {
+    hsd.Instance = SDIO;
+    uint8_t retryCnt = SDIO_READ_RETRIES;
+
+    bool status;
+    for (;;) {
+      TERN_(USE_WATCHDOG, HAL_watchdog_refresh());
+      status = (bool) HAL_SD_ReadBlocks(&hsd, (uint8_t*)dst, block, 1, 1000);  // read one 512 byte block with 500mS timeout
+      status |= (bool) HAL_SD_GetCardState(&hsd);     // make sure all is OK
+      if (!status) break;       // return passing status
+      if (!--retryCnt) break;   // return failing status if retries are exhausted
+    }
+    return status;
+
+    /*
+    return (bool) ((status_read | status_card) ? 1 : 0);
+
+    if (SDIO_GetCardState() != SDIO_CARD_TRANSFER) return false;
+    if (blockAddress >= SdCard.LogBlockNbr) return false;
+    if ((0x03 & (uint32_t)data)) return false; // misaligned data
+
+    if (SdCard.CardType != CARD_SDHC_SDXC) { blockAddress *= 512U; }
+
+    if (!SDIO_CmdReadSingleBlock(blockAddress)) {
+      SDIO_CLEAR_FLAG(SDIO_ICR_CMD_FLAGS);
+      dma_disable(SDIO_DMA_DEV, SDIO_DMA_CHANNEL);
+      return false;
+    }
+
+    while (!SDIO_GET_FLAG(SDIO_STA_DATAEND | SDIO_STA_TRX_ERROR_FLAGS)) {}
+
+    dma_disable(SDIO_DMA_DEV, SDIO_DMA_CHANNEL);
+
+    if (SDIO->STA & SDIO_STA_RXDAVL) {
+      while (SDIO->STA & SDIO_STA_RXDAVL) (void)SDIO->FIFO;
+      SDIO_CLEAR_FLAG(SDIO_ICR_CMD_FLAGS | SDIO_ICR_DATA_FLAGS);
+      return false;
+    }
+
+    if (SDIO_GET_FLAG(SDIO_STA_TRX_ERROR_FLAGS)) {
+      SDIO_CLEAR_FLAG(SDIO_ICR_CMD_FLAGS | SDIO_ICR_DATA_FLAGS);
+      return false;
+    }
+    SDIO_CLEAR_FLAG(SDIO_ICR_CMD_FLAGS | SDIO_ICR_DATA_FLAGS);
+    */
+
+    return true;
+  }
+
+  bool SDIO_WriteBlock(uint32_t block, const uint8_t *src) {
+    hsd.Instance = SDIO;
+    uint8_t retryCnt = SDIO_READ_RETRIES;
+    bool status;
+    for (;;) {
+      status = (bool) HAL_SD_WriteBlocks(&hsd, (uint8_t*)src, block, 1, 500);  // write one 512 byte block with 500mS timeout
+      status |= (bool) HAL_SD_GetCardState(&hsd);     // make sure all is OK
+      if (!status) break;       // return passing status
+      if (!--retryCnt) break;   // return failing status if retries are exhausted
+    }
+    return status;
+  }
+
+#endif // !USBD_USE_CDC_COMPOSITE
+#endif // SDIO_SUPPORT
+#endif // ARDUINO_ARCH_STM32 && !STM32GENERIC