GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

mcu/media/devices/Makefile

@@ -0,0 +1,3 @@
+
+SRCS-y += i2c_dev.c
+

mcu/media/devices/i2c_dev.c

@@ -0,0 +1,30 @@
+#include"xmedia_type.h"
+#include"xmedia_errcode.h"
+#include"i2c.h"
+#include "compile.h"
+
+#define REG_ADDR_MAX_WIDTH 2//16BIT
+
+STAGE1_FUNC xmedia_s32 i2c_read(xmedia_s32 fd, xmedia_u16 slave_addr, xmedia_u32 read_addr,
+                        xmedia_u8 addr_width, xmedia_u8 *buff, xmedia_u32 length)
+{
+    struct i2c_client client;
+
+    if(addr_width > REG_ADDR_MAX_WIDTH){
+        return XMEDIA_ERRCODE_NOT_SUPPORT;
+    }
+
+    client.i2c_num   = fd;
+    client.dev_addr  = slave_addr >> 1;
+    client.reg_addr  = read_addr;
+    client.reg_width = addr_width;
+
+    return i2c_recv(&client, buff, length);
+}
+
+STAGE1_FUNC xmedia_s32 i2c_write(xmedia_s32 fd, xmedia_u16 slave_addr, xmedia_u8 *buff, xmedia_u32 length)
+{
+    return i2c_send(fd, slave_addr >> 1, (xmedia_void *)buff, length);
+}
+
+