Provides the following system services : More...
#include <stdint.h>#include <stdbool.h>#include "LPC17xx.h"#include "fault_registers.h"#include "rtc.h"#include "sys_config.h"
Go to the source code of this file.
Data Structures | |
| struct | sys_mem_t |
Typedefs | |
| typedef void(* | void_func_t) (void) |
| typedef char(* | char_func_t) (char) |
Enumerations | |
| enum | sys_boot_t { boot_unknown = 0, boot_power_on = 1, boot_reset = 2, boot_watchdog = 4, boot_watchdog_recover, boot_brown_out } |
Functions | |
| void | lpc_sys_setup_system_timer (void) |
| uint64_t | sys_get_uptime_us (void) |
| sys_mem_t | sys_get_mem_info () |
| void | sys_get_mem_info_str (char buffer[280]) |
| sys_boot_t | sys_get_boot_type () |
| rtc_t | sys_get_boot_time () |
| void | sys_set_outchar_func (char_func_t func) |
| void | sys_set_inchar_func (char_func_t func) |
Detailed Description
Provides the following system services :
- Memory info of the system.
- Configure function to use for printf/scanf
- Get boot type and time
- Watchdog
12082013 : Added functionality to see next heap pointer from mem_info_t
Typedef Documentation
| typedef char(* char_func_t) (char) |
Function pointer of a function returning a char and taking a char as parameter
| typedef void(* void_func_t) (void) |
Void function pointer
Enumeration Type Documentation
| enum sys_boot_t |
Function Documentation
| void lpc_sys_setup_system_timer | ( | void | ) |
Sets up the system timer that drives the time needed to get uptime in ms and us along with some background services.
- See also
- SYS_CFG_SYS_TIMER at sys_config.h
MR0: Setup the match register to take care of the overflow. Upon the roll-over, we increment the roll-over count and the timer restarts from zero.
| rtc_t sys_get_boot_time | ( | ) |
- Returns
- the boot-time recorded in the system
| sys_boot_t sys_get_boot_type | ( | ) |
Defined at system_init.c
- Returns
- the reboot reason as detected during system startup
| sys_mem_t sys_get_mem_info | ( | ) |
Gets System Memory information The information includes Global Memory usage, and dynamic memory usage. This function is defined at memory.cpp
- Returns
- MemoryInfoType structure
| void sys_get_mem_info_str | ( | char | buffer[280] | ) |
Prints memory information to the given buffer The buffer needs to be at least 280 bytes
| uint64_t sys_get_uptime_us | ( | void | ) |
- Returns
- the system up time in microseconds
Loop until we can safely read both the rollover value and the timer value. When the timer rolls over, the TC value will start from zero, and the "after" value will be less than the before value in which case, we will loop again and pick up the new rollover count. This avoid critical section and simplifies the logic of reading higher 16-bit (roll-over) and lower 32-bit (timer value).
| void sys_set_inchar_func | ( | char_func_t | func | ) |
Sets the function used to input a char by scanf() or stdio input functions
- Parameters
-
func The function pointer to use to get a char
| void sys_set_outchar_func | ( | char_func_t | func | ) |
Defined at syscalls.c Sets the function used to output a char by printf() or stdio output functions
- Parameters
-
func The function pointer to use to output a char
