X-Git-Url: https://codewiz.org/gitweb?p=rmslog.git;a=blobdiff_plain;f=rmslog%2Fmain.c;h=d4bb6a0a5641796d2cb6fb0e14278ac58d53dd64;hp=9f52d5f789ea5e4fe76fad5468140137ba0ab3d4;hb=953c42c0ea7e1c27793ba465db862e2fbc7ffdf9;hpb=11db4fb1c52b7460f55d84402d5eb44da7bbda99

diff --git a/rmslog/main.c b/rmslog/main.c
index 9f52d5f..d4bb6a0 100644
--- a/rmslog/main.c
+++ b/rmslog/main.c
@@ -10,6 +10,11 @@
  * console messages.
  */
 
+#define FILE_NAME          "log.txt"
+#define FILE_OVERWRITE     1
+#define FILE_PREALLOC_SIZE 102400
+
+
 #include "hw/hw_led.h"
 
 #define LOG_LEVEL      3
@@ -150,9 +155,6 @@ static void init(void)
 	timer_delay(1000);
 	kfile_printf(&ser.fd, "Hello, world!\r\n");
 
-#ifdef BERTOS_FAT
-	ser_init(&spi, SER_SPI);
-#else
 	DDRB |= BV(PORTB0) | BV(PORTB2) | BV(PORTB3) | BV(PORTB5);
 	if (!sd_raw_init())
 	{
@@ -168,35 +170,36 @@ int main(void)
 {
 	init();
 
-#ifdef BERTOS_FAT
+	size_t size;
+	char buf[256];
+	bool sync_pending = false;
 
-	FRESULT fat_err;
-	if ((fat_err = f_mount(0, &fs)) != FR_OK)
+	/* create file */
+	if(!fat_create_file(dd, FILE_NAME, &dir_entry))
 	{
-		LOG_ERR("Error mounting FAT volume: %d\n", fat_err);
+		#if FILE_OVERWRITE
+			fat_delete_file(fs, &dir_entry);
+			fat_create_file(dd, FILE_NAME, &dir_entry);
+		#endif
 	}
 
-	fat_err = fatfile_open(&file, "foo.txt", FA_WRITE | FA_CREATE_ALWAYS);
-	ASSERT(fat_err == FR_OK);
-
-	size_t count = kfile_write(&file.fd, "Hello, world!", strlen("Hello, world!"));
-	ASSERT(count == strlen("Hello, world!"));
+	fd = open_file_in_dir(fs, dd, FILE_NAME);
 
-#else
-
-	fat_create_file(dd, "log.txt", &dir_entry);
-	fd = open_file_in_dir(fs, dd, "log.txt");
-	int32_t offset = 0;
-	fat_seek_file(fd, &offset, FAT_SEEK_END);
+	/* preallocate file */
+	#if FILE_PREALLOC_SIZE
+	{
+		LED_ON();
+		for (int i = 0; i < (int)(FILE_PREALLOC_SIZE / sizeof(buf)); ++i)
+			fat_write_file(fd, (void *)buf, sizeof(buf));
 
-#endif
+		int32_t offset = 0;
+		fat_seek_file(fd, &offset, FAT_SEEK_SET);
+		LED_OFF();
+	}
+	#endif
 
 	while (1)
 	{
-		size_t size;
-		char buf[128];
-		bool sync_pending = false;
-
 		if ((size = ser_read(&ser, buf, sizeof(buf))) != 0)
 		{
 			LED_ON();