;******************** (C) Yifeng ZHU ******************************************* ; @file main.s ; @author Yifeng Zhu ; @date May-17-2015 ; @note ; This code is for the book "Embedded Systems with ARM Cortex-M ; Microcontrollers in Assembly Language and C, Yifeng Zhu, ; ISBN-13: 978-0982692639, ISBN-10: 0982692633 ; @attension ; This code is provided for education purpose. The author shall not be ; held liable for any direct, indirect or consequential damages, for any ; reason whatever. More information can be found from book website: ; http:;www.eece.maine.edu/~zhu/book ;******************************************************************************* INCLUDE core_cm4_constants.s ; Load Constant Definitions INCLUDE stm32l476xx_constants.s IMPORT System_Clock_Init IMPORT UART2_Init IMPORT USART2_Write ; Green LED <--> PA.5 LED_PIN EQU 5 AREA main, CODE, READONLY EXPORT __main ; make __main visible to linker ENTRY __main PROC BL System_Clock_Init BL UART2_Init LDR r0, =str ; First argument MOV r1, #11 ; Second argument BL USART2_Write stop B stop ; dead loop & program hangs here ENDP ALIGN AREA myData, DATA, READWRITE ALIGN str DCB "123456789\r\n", 0 END