git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1299 35acf78f-673a-0410-8e92-d51de3d6d3f4

demos/ARMCM3-STM32F103-FATFS-GCC/Makefile

@@ -77,6 +77,7 @@ CSRC = ${PORTSRC} \
        ${CHIBIOS}/os/io/platforms/STM32/spi_lld.c \
        ${CHIBIOS}/os/io/platforms/STM32/stm32_dma.c \
        ${CHIBIOS}/os/various/evtimer.c \
+       ${CHIBIOS}/os/various/syscalls.c \
        board.c main.c
 
 # C++ sources that can be compiled in ARM or THUMB mode depending on the global
@@ -158,7 +159,7 @@ CPPWARN = -Wall -Wextra
 #
 
 # List all default C defines here, like -D_DEBUG=1
-DDEFS =
+DDEFS = -DSTDOUT_SD=SD2 -DSTDIN_SD=SD2
 
 # List all default ASM defines here, like -D_DEBUG=1
 DADEFS =

demos/ARMCM3-STM32F103-FATFS-GCC/main.c

@@ -27,52 +27,41 @@
 
 #include <ff.h>
 
+#include <stdio.h>
+#include <string.h>
+
 #include "board.h"
 
-/*
- * Maximum speed SPI configuration (18MHz, CPHA=0, CPOL=0, MSb first).
+/**
+ * @brief FS object.
  */
-static SPIConfig hs_spicfg = {
-  IOPORT2, GPIOB_SPI2NSS, 0
-};
+FATFS MMC_FS;
 
-/*
- * Low speed SPI configuration (281.250KHz, CPHA=0, CPOL=0, MSb first).
- */
-static SPIConfig ls_spicfg = {
-  IOPORT2, GPIOB_SPI2NSS, SPI_CR1_BR_2 | SPI_CR1_BR_1
-};
-
-/*
- * MMC driver instance.
+/**
+ * MMC driver instance.
  */
 MMCDriver MMCD1;
 
-/*
- * MMC configuration (empty).
- */
+/* FS mounted and ready.*/
+static bool_t fs_ready = FALSE;
+
+/* Maximum speed SPI configuration (18MHz, CPHA=0, CPOL=0, MSb first).*/
+static SPIConfig hs_spicfg = {IOPORT2, GPIOB_SPI2NSS, 0};
+
+/* Low speed SPI configuration (281.250KHz, CPHA=0, CPOL=0, MSb first).*/
+static SPIConfig ls_spicfg = {IOPORT2, GPIOB_SPI2NSS, SPI_CR1_BR_2 | SPI_CR1_BR_1};
+
+/* MMC configuration (empty).*/
 static const MMCConfig mmc_cfg = {};
 
-/*
- * Card insertion verification.
- */
-static bool_t mmc_is_inserted(void) {
+/* Card insertion verification.*/
+static bool_t mmc_is_inserted(void) {return palReadPad(IOPORT3, GPIOC_MMCCP);}
 
-  return palReadPad(IOPORT3, GPIOC_MMCCP);
-}
+/* Card protection verification.*/
+static bool_t mmc_is_protected(void) {return !palReadPad(IOPORT3, GPIOC_MMCWP);}
 
-/*
- * Card protection verification.
- */
-static bool_t mmc_is_protected(void) {
-
-  return !palReadPad(IOPORT3, GPIOC_MMCWP);
-}
-
-/**
- * @brief FS object.
- */
-FATFS MMC_FS;
+/* Generic large buffer.*/
+uint8_t fbuff[1024];
 
 /*
  * Red LEDs blinker thread, times are in milliseconds.
@@ -90,14 +79,65 @@ static msg_t Thread1(void *arg) {
   return 0;
 }
 
+static FRESULT scan_files(char *path)
+{
+  FRESULT res;
+  FILINFO fno;
+  DIR dir;
+  int i;
+  char *fn;
+
+  res = f_opendir(&dir, path);
+  if (res == FR_OK) {
+    i = strlen(path);
+    for (;;) {
+      res = f_readdir(&dir, &fno);
+      if (res != FR_OK || fno.fname[0] == 0)
+        break;
+      if (fno.fname[0] == '.')
+        continue;
+      fn = fno.fname;
+      if (fno.fattrib & AM_DIR) {
+        siprintf(&path[i], "/%s", fn);
+        res = scan_files(path);
+        if (res != FR_OK)
+          break;
+        path[i] = 0;
+      }
+      else {
+        iprintf("%s/%s\r\n", path, fn);
+      }
+    }
+  }
+  return res;
+}
+
 /*
  * Executed as event handler at 500mS intervals.
  */
 static void TimerHandler(eventid_t id) {
 
   (void)id;
-  if (palReadPad(IOPORT1, GPIOA_BUTTON))
-    TestThread(&SD2);
+  if (palReadPad(IOPORT1, GPIOA_BUTTON)) {
+    if (fs_ready) {
+      FRESULT err;
+      uint32_t clusters;
+      FATFS *fsp;
+
+      err = f_getfree("/", &clusters, &fsp);
+      if (err != FR_OK) {
+        iprintf("FS: f_getfree() failed\r\n");
+        return;
+      }
+      iprintf("FS: %lu free clusters, %u sectors per cluster, %lu bytes free\r\n",
+              clusters, MMC_FS.csize,
+              clusters * (uint32_t)MMC_FS.csize * (uint32_t)MMC_SECTOR_SIZE);
+      fbuff[0] = 0;
+      scan_files((char *)fbuff);
+    }
+    else
+      TestThread(&SD2);
+  }
 }
 
 /*
@@ -105,25 +145,27 @@ static void TimerHandler(eventid_t id) {
  */
 static void InsertHandler(eventid_t id) {
   FRESULT err;
-  uint32_t clusters;
-  FATFS *fsp;
 
   (void)id;
+  iprintf("MMC: inserted\r\n");
   /*
    * On insertion MMC initialization and FS mount.
    */
-  if (mmcConnect(&MMCD1))
+  iprintf("MMC: initialization ");
+  if (mmcConnect(&MMCD1)) {
+    iprintf("failed\r\n");
     return;
+  }
+  iprintf("ok\r\n");
+  iprintf("FS: mount ");
   err = f_mount(0, &MMC_FS);
   if (err != FR_OK) {
+    iprintf("failed\r\n");
     mmcDisconnect(&MMCD1);
     return;
   }
-  err = f_getfree("/", &clusters, &fsp);
-  if (err != FR_OK) {
-    mmcDisconnect(&MMCD1);
-    return;
-  }
+  fs_ready = TRUE;
+  iprintf("ok\r\n");
 }
 
 /*
@@ -132,6 +174,8 @@ static void InsertHandler(eventid_t id) {
 static void RemoveHandler(eventid_t id) {
 
   (void)id;
+  iprintf("MMC: removed\r\n");
+  fs_ready = FALSE;
 }
 
 /*

demos/ARMCM3-STM32F103-FATFS-GCC/readme.txt

@@ -8,9 +8,12 @@ The demo will on an Olimex STM32-P103 board.
 
 ** The Demo **
 
-The demo flashes the board LED using a thread, by pressing the button located
-on the board the test procedure is activated with output on the serial port
-COM2 (USART2).
+This demo shows how to integrate the FatFs file system and use the SPI and MMC
+drivers.
+The demo flashes the board LED using a thread and monitors the MMC slot for
+a card insertion. By pressing the button located on the board while a card is
+inserted a directory dump on the serial port is performed, if a card is not
+inserted then the test procedure is activated.
 
 ** Build Procedure **
 

os/various/syscalls.c

@@ -63,18 +63,31 @@
 #include <sys/types.h>
 
 #include <ch.h>
+#if defined(STDOUT_SD) || defined(STDIN_SD)
+#include <serial.h>
+#endif
 
 /***************************************************************************/
 
 int _read_r(struct _reent *r, int file, char * ptr, int len)
 {
   (void)r;
+#if defined(STDIN_SD)
+  if (!len || (file != 0)) {
+    errno = EINVAL;
+    return -1;
+  }
+  *ptr++ = chIOGet(&STDOUT_SD);
+  if (--len > 0)
+    len = chIORead(&STDOUT_SD, (uint8_t *)ptr, (size_t)len);
+  return len;
+#else
   (void)file;
   (void)ptr;
   (void)len;
-
   errno = EINVAL;
   return -1;
+#endif
 }
 
 /***************************************************************************/
@@ -93,10 +106,20 @@ int _lseek_r(struct _reent *r, int file, int ptr, int dir)
 
 int _write_r(struct _reent *r, int file, char * ptr, int len)
 {
+  int n;
+
   (void)r;
   (void)file;
   (void)ptr;
-
+#if defined(STDOUT_SD)
+  if (file != 1) {
+    errno = EINVAL;
+    return -1;
+  }
+  n = len;
+  while (n--)
+    chIOPut(&STDOUT_SD, *ptr++);
+#endif
   return len;
 }
 

readme.txt

@@ -15,6 +15,9 @@
 - NEW: Generic MMC (over SPI) driver.
 - NEW: Added a STM32 demo that integrates the MMC driver and the FatFs
   file system.
+- NEW: Implemented I/O redirection on a serial driver into syscalls.c, now
+  it is possible (but not recommended) to use printf()/scanf() etc. An usage
+  example is in the new MMC/FatFs demo. Note the extra -D... into the Makefile.
 - CHANGE: Moved the STM32 firmware library under ./ext, this way there is no
   need to duplicate it in each demo program.
 - CHANGE: Moved the file stm32f10x.h from the demos to the platforms support