+

+ Version 1.4.7 (no source code change [still labeled 1.4.5]) 2015/10/20

+

Modified arm_math.h

+

Added explicit type casts to remove compiler warnings.
Supressed irrelevant warnings for toolchain GCC.

+

Updated documentation

+

functions arm_cos_f32, arm_sin_f32 use table lookup combined with linear interpolation (since V1.4.2). This is now documented.

+

+ Version 1.4.6 (no source code change [still labeled 1.4.5]) 2015/08/26

+

Modified arm_math.h

+

Updated function arm_sqrt_f32 for use with IAR.

+

+ Version 1.4.5 2015/03/19

+

Added support for the Cortex-M7 processor

+

Fixed bug in arm_mat_inverse_f32.c and arm_mat_inverse_f64.c. They weren't properly handling diagonal matrices.

+

arm_cfft_f32.c - help documentation updated

+

Updated documentation to show deprecated functions

+

+ Version 1.4.4 2014/07/31

+

Added the following new files:

+

Optimizations to the following files:

+

+ Version 1.4.3 2014/03/12

+

Undid changes to arm_biquad_cascade_df1_q31.c

+

Added support for COSMIC

+

Changed 'short' to 'q15_t' where appropriate

+

Fixed arm_conv_partial_fast_q15.c for UNALIGNED_SUPPORT_DISABLE

+

Fixed arm_mat_cmplx_mult_q15.c for UNALIGNED_SUPPORT_DISABLE

+

Fixed arm_conv_partial_opt_q7.c for UNALIGNED_SUPPORT_DISABLE

+

Restored the internal fftlen of 16 to arm_rfft_fast_init_f32.c

+

Updated core_xxx.h files to newer versions from ARM

+

+ Version 1.4.2 2013/10/16

+

Moved const structures from arm_const_structs.h to arm_const_structs.c

+

Rfft_fast_f32 no longer allows fft length of 16 as it wouldn't have worked anyways

+

Partial convolution was producing the wrong results in some cases

+

arm_lms_q31 and q15 now saturate the results in the M0 code to match the M3 & M4 code

+

Rfft_q15 and q31 had potential overflow issues resolved

+

arm_biquad_cascade_df1_q31.c had a typo which resulted in incorrect outputs

+

fast math sine and cosine now use linear interpolation

+

controller sin/cos now uses a more accurate interpolation algorithm

+

arm_mat_inverse was reading outside its input array

+

arm_cmplx_dot_prod was incorrect

+

switched some incorrect usages of __ssat to clip_q63_to_q31

+

changed var & std q31 to downshift input data by 8

+

var q31 & q15 no longer output larger data types

+

arm_mat_cmplx_mult_q15.c was done incorrectly for big vs little endian

+

arm_mat_mult_q31.c was inconsistent with the other multiplies, so added saturation

+

arm_conv_partial_q15 had an incorrect comparison between signed & unsigned values

+

+ Version 1.4.1 2013/02/20

+

Updated licenses in headers to 2013

+

Fixed ALIGN4 macro in arm_math.h

+

Added files to Cortex-M0 projects so that all projects have same file list

+

Fixed bugs in

+

arm_biquad_cascade_d2fT_f32.c
arm_cfft_radix2_q31
arm_cfft_radix2_f32
arm_math.h (arm_pid functions)
arm_iir_lattice_q31.c

+

+ Version 1.4.0 2013/01/09

+

Updated with more optimizations, bug fixes and new license information in headers

+

Optimized functions:

+

arm_biquad_cascade_df2T_f32
arm_biquad_cascade_df1_q31
arm_fir_f32
arm_fir_fast_q31
arm_cfft_f32
arm_cfft_radix2_q31
arm_rfft_fast_f32 (new function)

+

Fixed compiler warnings in arm_math.h for comparing signed and unsigned ints

+

Fixed a saturation bug in arm_rms_q15

+

Simplified the code in arm_sin_cos_q31

+

Added a preprocessor directive to treat the Cortex M0+ just like the Cortex M0

+

The following functions were deprecated and will be removed in a future version

+

arm_cfft_radix2_f32
arm_cfft_radix2_init_f32
arm_cfft_radix4_f32
arm_cfft_radix4_init_f32

+

+ Version 1.3.0

+

Added CMSIS DSP Software Library

+

The CMSIS DSP Software Library is a suite of common signal processing functions targeted to Cortex-M processor based microcontrollers. Even though the code has been specifically optimized towards using the extended DSP instruction set of the Cortex-M4 processor, the library can be compiled for any Cortex-M processor.

+

For more information please see CMSIS DSP Library documentation. Added Cortex-M4 Core Support

+

Additional folder CM4, containing the Cortex-M4 core support files, has been added. CM0 CM3 CM4 CoreSupport DeviceSupport

+

New naming for Core Support Files

+

The new Core Support Files are:

+

core_cm#.h (# = 0, 3, 4)
core_cmFunc.h (Cortex-M Core Register access functions)
core_cmInstr.h (Cortex-M Core instructions)
core_cm4_simd.h (Cortex-M4 SIMD instructions)

+

+ Version 1.2.0

+

Removed CMSIS Middelware packages

+

CMSIS Middleware is on hold from ARM side until a agreement between all CMSIS partners is found. SystemFrequency renamed to SystemCoreClock

+

The variable name SystemCoreClock is more precise than SystemFrequency because the variable holds the clock value at which the core is running. Changed startup concept

+

The old startup concept (calling SystemInit_ExtMemCtl from startup file and calling SystemInit from main) has the weakness that it does not work for controllers which need a already configuerd clock system to configure the external memory controller.

+

Changed startup concept

+

SystemInit() is called from startup file before premain.
SystemInit() configures the clock system and also configures an existing external memory controller.
SystemInit() must not use global variables.
SystemCoreClock is initialized with a correct predefined value.
Additional function void SystemCoreClockUpdate (void) is provided.
SystemCoreClockUpdate() updates the variable SystemCoreClock and must be called whenever the core clock is changed.
SystemCoreClockUpdate() evaluates the clock register settings and calculates the current core clock.

+

Advanced Debug Functions

+

ITM communication channel is only capable for OUT direction. To allow also communication for IN direction a simple concept is provided.

+

Global variable volatile int ITM_RxBuffer used for IN data.
Function int ITM_CheckChar (void) checks if a new character is available.
Function int ITM_ReceiveChar (void) retrieves the new character.

+

For detailed explanation see file CMSIS debug support.htm.

+

Core Register Bit Definitions

+

Files core_cm3.h and core_cm0.h contain now bit definitions for Core Registers. The name for the defines correspond with the Cortex-M Technical Reference Manual.

+

e.g. SysTick structure with bit definitions

+

+typedef struct

+{

+  __IO uint32_t CTRL;                         

+  __IO uint32_t LOAD;                         

+  __IO uint32_t VAL;                          

+  __I  uint32_t CALIB;                        

+} SysTick_Type;

+

+/* SysTick Control / Status Register Definitions */

+#define SysTick_CTRL_COUNTFLAG_Pos     16                                      

+#define SysTick_CTRL_COUNTFLAG_Msk    (1ul << SysTick_CTRL_COUNTFLAG_Pos)      

+#define SysTick_CTRL_CLKSOURCE_Pos      2                                      

+#define SysTick_CTRL_CLKSOURCE_Msk     (1ul << SysTick_CTRL_CLKSOURCE_Pos)     

+#define SysTick_CTRL_TICKINT_Pos        1                                      

+#define SysTick_CTRL_TICKINT_Msk       (1ul << SysTick_CTRL_TICKINT_Pos)       

+#define SysTick_CTRL_ENABLE_Pos         0                                      

+#define SysTick_CTRL_ENABLE_Msk        (1ul << SysTick_CTRL_ENABLE_Pos)        

+/* SysTick Reload Register Definitions */

+#define SysTick_LOAD_RELOAD_Pos         0                                      

+#define SysTick_LOAD_RELOAD_Msk        (0xFFFFFFul << SysTick_LOAD_RELOAD_Pos) 

+/* SysTick Current Register Definitions */

+#define SysTick_VAL_CURRENT_Pos         0                                      

+#define SysTick_VAL_CURRENT_Msk        (0xFFFFFFul << SysTick_VAL_CURRENT_Pos) 

+/* SysTick Calibration Register Definitions */

+#define SysTick_CALIB_NOREF_Pos        31                                      

+#define SysTick_CALIB_NOREF_Msk       (1ul << SysTick_CALIB_NOREF_Pos)         

+#define SysTick_CALIB_SKEW_Pos         30                                      

+#define SysTick_CALIB_SKEW_Msk        (1ul << SysTick_CALIB_SKEW_Pos)          

+#define SysTick_CALIB_TENMS_Pos         0                                      

+#define SysTick_CALIB_TENMS_Msk        (0xFFFFFFul << SysTick_VAL_CURRENT_Pos) 

+ /* end of group CMSIS_CM3_SysTick */

+

DoxyGen Tags

+

DoxyGen tags in files core_cm3.[c,h] and core_cm0.[c,h] are reworked to create proper documentation using DoxyGen. Folder Structure

+

The folder structure is changed to differentiate the single support packages.

+

CM0
+CM3
+    CoreSupport
+    DeviceSupport
+        Vendor
+            Device
+                Startup
+                    Toolchain
+                    Toolchain
+                    ...
+            Device
+            ...
+        Vendor
+        ...
+    Example (optional)
+        Toolchain
+            Device
+            Device
+            ...
+        Toolchain
+        ...
+Documentation
+

+ Version 1.1.0 2012/02/15

+

Updated with more optimizations, bug fixes and minor API changes.

+

+ Version 1.0.11 2011/10/18

+

Bug Fix in conv, correlation, partial convolution.

+

+ Version 1.0.10 2011/7/15

+

Big Endian support added and Merged M0 and M3/M4 Source code.

+

+ Version 1.0.3 2010/11/29

+

Re-organized the CMSIS folders and updated documentation.

+

+ Version 1.0.2 2010/11/11

+

Documentation updated.

+

+ Version 1.0.1 2010/10/05

+

Production release and review comments incorporated.

+

+ Version 1.0.0 2010/09/20

+

Production release and review comments incorporated.

+

+ Version 0.0.9 2010/08/27

+

Added files: arm_biquad_cascade_df1_fast_q15.c arm_biquad_cascade_df1_fast_q31.c arm_fir_fast_q31.c arm_fir_fast_q15.c

+

+ Version 0.0.7 2010/06/10

+

Misra-C changes done

+

+ Version 0.0.5 2010/04/26

+

incorporated review comments and updated with latest CMSIS layer

+

+ Version 0.0.3 2010/03/10 DP

+

Initial version

+