diff --git a/src/peripheral/CMakeLists.txt b/src/peripheral/CMakeLists.txt
new file mode 100644
index 0000000..b7531a3
--- /dev/null
+++ b/src/peripheral/CMakeLists.txt
@@ -0,0 +1,132 @@
+# LOCATION: projectroot/src/peripheral
+
+#Example/template lines.
+#add_library(ch32v20x_xxx SHARED
+#    src/ch32v20x_xxx.c
+#)
+#
+#target_include_directories(ch32v20x_xxx PUBLIC ./inc)
+
+
+
+add_library(ch32v20x_adc SHARED
+    src/ch32v20x_adc.c
+)
+
+target_include_directories(ch32v20x_adc PUBLIC ./inc)
+
+
+add_library(ch32v20x_xxx SHARED
+    src/ch32v20x_xxx.c
+)
+
+target_include_directories(ch32v20x_xxx PUBLIC ./inc)
+
+
+add_library(ch32v20x_can SHARED
+    src/ch32v20x_can.c
+)
+
+target_include_directories(ch32v20x_can PUBLIC ./inc)
+
+
+add_library(ch32v20x_dbgmcu SHARED
+    src/ch32v20x_dbgmcu.c
+)
+
+target_include_directories(ch32v20x_dbgmcu PUBLIC ./inc)
+
+add_library(ch32v20x_exti SHARED
+    src/ch32v20x_exti.c
+)
+
+target_include_directories(ch32v20x_exti PUBLIC ./inc)
+
+add_library(ch32v20x_gpio SHARED
+    src/ch32v20x_gpio.c
+)
+
+target_include_directories(ch32v20x_gpio PUBLIC ./inc)
+
+
+add_library(ch32v20x_i2c SHARED
+    src/ch32v20x_i2c.c
+)
+
+target_include_directories(ch32v20x_i2c PUBLIC ./inc)
+
+
+add_library(ch32v20x_misc SHARED
+    src/ch32v20x_misc.c
+)
+
+target_include_directories(ch32v20x_misc PUBLIC ./inc)
+
+
+add_library(ch32v20x_pwr SHARED
+    src/ch32v20x_pwr.c
+)
+
+target_include_directories(ch32v20x_pwr PUBLIC ./inc)
+
+
+add_library(ch32v20x_rtc SHARED
+    src/ch32v20x_rtc.c
+)
+
+target_include_directories(ch32v20x_rtc PUBLIC ./inc)
+
+
+add_library(ch32v20x_tim SHARED
+    src/ch32v20x_tim.c
+)
+
+target_include_directories(ch32v20x_tim PUBLIC ./inc)
+
+
+add_library(ch32v20x_usb SHARED
+    src/ch32v20x_usb.c
+)
+
+target_include_directories(ch32v20x_usb PUBLIC ./inc)
+
+
+add_library(ch32v20x_bkp SHARED
+    src/ch32v20x_bkp.c
+)
+
+target_include_directories(ch32v20x_bkp PUBLIC ./inc)
+
+
+add_library(ch32v20x_crc SHARED
+    src/ch32v20x_crc.c
+)
+
+target_include_directories(ch32v20x_crc PUBLIC ./inc)
+
+
+add_library(ch32v20x_dma SHARED
+    src/ch32v20x_dma.c
+)
+
+target_include_directories(ch32v20x_dma PUBLIC ./inc)
+
+
+add_library(ch32v20x_flash SHARED
+    src/ch32v20x_flash.c
+)
+
+target_include_directories(ch32v20x_flash PUBLIC ./inc)
+
+
+add_library(ch32v20x SHARED
+    src/ch32v20x.c
+)
+
+# This one doesn't have source code.
+#target_include_directories(ch32v20x PUBLIC ./inc)
+#
+#add_library(ch32v20x SHARED
+#    src/ch32v20x.c
+#)
+