1 files changed, 118 insertions, 0 deletions
diff --git a/cmd/cmd_spi.c b/cmd/cmd_spi.c
new file mode 100644
index 0000000..bfda27c
--- /dev/null
+++ b/cmd/cmd_spi.c
@@ -0,0 +1,118 @@
+#include "cmd_spi.h"
+
+/*
+SPI command shows some info about SPI protocol
+HELP   - shows all params
+MISO,MOSI,SCK,HOLD,CS shows meaning of them
+MODES  - shows SPI modes avaliable
+SPI    - show diagram of spi
+MASTER - show master connection
+SLAVE  - show slave connection
+*/
+
+//TODO multiline output =[
+char _spi_str_spi[]="""\
+--------\n\
+| MISO |\n\
+| MOSI |\n\
+| SCK  |\n\
+| CS   |\n\
+--------\n\
+""";
+
+char _spi_str_slave[]="""\
+slave\n\
+--------\n\
+| MISO |>-\n\
+| MOSI |<-\n\
+| SCK  |<-\n\
+| CS   |<-\n\
+--------\n\
+""";
+
+char _spi_str_master[]="""\
+master\n\
+--------\n\
+| MISO |<-\n\
+| MOSI |>-\n\
+| SCK  |>-\n\
+| CS   |>-\n\
+--------\n\
+""";
+
+char *_spi_help_table[] = 
+{
+	"help"  ,"MODES,SPI,SLAVE,MASTER,MISO,MOSI,SCK,HOLD,CS",
+	"MODES" ,"QUAD(4-wires),DOUBLE(3-wires),SINGLE(2-wires)",
+	"SPI"   ,_spi_str_spi,
+	"SLAVE" ,_spi_str_slave,
+	"MASTER",_spi_str_master,
+	"MISO"  ,"(M)aster(I)nput(S)lave(O)utput",
+	"MOSI"  ,"(M)aster(O)utput(S)lave(I)nput",
+	"SCK"   ,"Serial Clockrate",
+	"HOLD"  ,"HOLD operation for some time",
+	"CS"    ,"(C)hip(S)elect",
+	NULL,NULL
+};
+
+char *__cmd_spi_iter(char **table, char *cmp)
+{
+	int iter = 0;
+	char *ret = NULL;
+
+	//yea thats hack mate
+	iter = 0;
+	while (table[iter]!=NULL)
+	{
+		printf("%s\n",table[iter]);
+		if (strncmp(table[iter],cmp,strlen(table[iter]))==0)
+		{
+			ret = table[iter+1];
+		}
+		iter += 2;
+	}
+	return ret;
+}
+
+void *cmd_spi(void *data)
+{
+	char *ret = NULL;
+	char *match = NULL;
+
+	int count=-1;
+	sds params;
+	sds *tokens=NULL;
+
+	printf("SPI\n");
+
+	if (data == NULL)
+	{
+		ret = alloc_new_str("SPI protocol info!");
+	} else
+	{
+		params = sdsnew(data);
+		tokens = sdssplitargs(params, &count);
+
+		//maybe useless thing but who knows
+		if (count < 1)
+		{
+			ret = alloc_new_str("None args");
+		}
+
+		match = __cmd_spi_iter(_spi_help_table, tokens[0]);
+		if (match)
+		{
+			ret = alloc_new_str(match);
+		} else
+		{
+			ret = alloc_new_str("None such commund");
+		}
+
+		sdsfree(params);
+		sdsfreesplitres(tokens, count);
+		
+	}
+
+	return ret;
+}
+