do a port to the '8266I wonder what the usecase for that is? For example for me it would be much more work to integrate the esp into my network than just to plug in a usb cable.
2) Any idea how sensitive the voltages are, for instance what the optimal values are for VPP and VDD at different stages? Do we ever /need/ to set VPP higher than 8.3V?VPP must go to 10.8. There are some reports of problems when not getting the voltages right in this thread.
3) Why didn't you guys go STM32F042 I didn't see anyone mentioning it? The crystal-less operation makes things really convenient and cheap.The ´72 is very similar, also does crystal-less. But the ´42 is not as common and more expensive.
How about the Puolop PTBO164SX? According to Puolop, it has 1.75 KW of ROM, but I don't see a part with that amount of ROM in the Padauk catalog.
unsigned char _sdcc_external_startup(void)
{
PDK_INIT_SYSCLOCK_4MHZ(); //use 4MHz so we can use 3.0V VDD
EASY_PDK_CALIBRATE_IHRC(4000000,3000); //tune SYSCLK = 4MHz @ 3.000V
return 0; //perform normal initialization
}
void interrupt(void) __interrupt(0)
{
if(_intrq & INTRQ_T16) //interrupt request for timer16?
{
//do something here...
_intrq &= ~INTRQ_T16; //clear this interrupt request
}
}
#define SPI_PORT _pa
#define SPI_PORTC _pac
#define SPI_NCS_PIN 4
#define SPI_CLK_PIN 0
#define SPI_OUT_PIN 6
#define SPI_IN_PIN 7
//...
uint8_t SPI_SendReceive(uint8_t s)
{
__asm__(
" mov a, #8 \n" //loop 8 times
"__SPI_SNDRCV_BIT: \n"
" set0 "_ASMV(SPI_PORT)", #"_ASMD(SPI_OUT_PIN)" \n" //SPI-OUT = 0
" t0sn _SPI_SendReceive_PARM_1, #7 \n" //s.7==0 ?
" set1 "_ASMV(SPI_PORT)", #"_ASMD(SPI_OUT_PIN)" \n" //SPI-OUT = 1
" set1 "_ASMV(SPI_PORT)", #"_ASMD(SPI_CLK_PIN)" \n" //SPI-CLK = 1
" sl _SPI_SendReceive_PARM_1 \n" //s<<=1
" t0sn "_ASMV(SPI_PORT)", #"_ASMD(SPI_IN_PIN)" \n" //SPI-IN==0 ?
" set1 _SPI_SendReceive_PARM_1, #0 \n" //s.0=1
" set0 "_ASMV(SPI_PORT)", #"_ASMD(SPI_CLK_PIN)" \n" //SPI-CLK = 0
" dzsn a \n" //loop--
" goto __SPI_SNDRCV_BIT \n" //loop again if>0
);
return s;
}
Attached is my current WORK IN PROGRESS version (one big include file for all). It includes the calibration definitions and many other useful stuff.
I see the firmware uses ST's USB middleware, which is under ST's SLA0044 license.
Ain't this incompatible with GPL (eg. Do you need a linking exception to allow the ST USB middleware to be used?
The developed FREE-PDK software is GPL. This is the authors choice and 100% valid.
Even the explicit mentioned GPL in (5) refers to another fact. It tries to make clear that the middleware software from ST can never become GPL licensed (which is not the case here, it still falls under the original ST license visible in all ST files).
Maybe this will not fulfill the strict 100% GPL requirements of a complete compiled software package required from some Linux distributions like Debian and therefor the software can not be bundled with Debian but this does not mean that there is a problem using GPL for the FREE-PDK software.
"GPL linking exception for FREE PDK Programmer STM32 firmware binary: You are allowed to compile and link the complete code from this repository, including the included ST USB middleware, in order to build a binary firmware which you can use on the STM32 based Free PDK programmer."
Additional permission under GNU GPL version 3 section 7
If you modify this program, or any covered work, by linking or combining it with the STMicroelectronics STM32 USB Device Library (or a modified version of that library),
you are granted additional permission to convey the resulting work. Corresponding Source for a non-source form of such a combination shall include the source code for the
parts of the STM32 USB Device Library used as well as that of the covered work.
"GPL linking exception for FREE PDK Programmer STM32 firmware binary: You are allowed to compile and link the complete code from this repository, including the included ST USB middleware, in order to build a binary firmware which you can use on the STM32 based Free PDK programmer."The GPL doesn't forbid you to compile and link something non-GPL-compliant, it forbids you to distribute this binary. Unfortunately careful wording is required to avoid the pitfalls of legalese...
GPL exceptions are a common thing and I suggest to re-use and adapt what others have done. It looks like for example wget uses something that would fit. See https://en.wikipedia.org/wiki/Wget#License.
I suggest to adapt it like this:Code: [Select]Additional permission under GNU GPL version 3 section 7
If you modify this program, or any covered work, by linking or combining it with the STMicroelectronics STM32 USB Device Library (or a modified version of that library),
you are granted additional permission to convey the resulting work. Corresponding Source for a non-source form of such a combination shall include the source code for the
parts of the STM32 USB Device Library used as well as that of the covered work.
Hi,
To understand the register mappings on different PDK CPU types better I created a list (based on include files from original IDE).
https://github.com/free-pdk/fppa-pdk-documentation/blob/master/PDK_register_mapping_scroll_right.csv
Attached is a colorful version as PNG from it.
Based on this info (most registers jump around for different types and only a few number remains static) I think the best idea would be to create one include file per supported processor like:
pdk/pmc150c.h
pdk/pfs154.h
pdk/pfs173.h
...
Comments? Suggestions?
JS
Hi,
To understand the register mappings on different PDK CPU types better I created a list (based on include files from original IDE).
https://github.com/free-pdk/fppa-pdk-documentation/blob/master/PDK_register_mapping_scroll_right.csv
Attached is a colorful version as PNG from it.
Based on this info (most registers jump around for different types and only a few number remains static) I think the best idea would be to create one include file per supported processor like:
pdk/pmc150c.h
pdk/pfs154.h
pdk/pfs173.h
...
Comments? Suggestions?
JS
In the table i miss the Timer3 registers for the PFS154.
C compiler: https://github.com/free-pdk/sdcc-pdk-code-examples
~/sdcc/bin/sdcc -lpdk15 -mpdk15 count.c
-rw-r--r-- 1 frank frank 4424 Jul 24 11:44 count.sym
-rw-r--r-- 1 frank frank 19123 Jul 24 11:44 count.rst
-rw-r--r-- 1 frank frank 6046 Jul 24 11:44 count.rel
-rw-r--r-- 1 frank frank 8774 Jul 24 11:44 count.map
-rw-r--r-- 1 frank frank 19123 Jul 24 11:44 count.lst
-rw-r--r-- 1 frank frank 192 Jul 24 11:44 count.lk
-rw-r--r-- 1 frank frank 1132 Jul 24 11:44 count.ihx
-rw-r--r-- 1 frank frank 0 Jul 24 11:44 count.cdb
-rw-r--r-- 1 frank frank 1720 Jul 24 11:37 count.c
-rw-r--r-- 1 frank frank 6843 Jul 24 11:44 count.asm
SDCC : mcs51/z80/z180/r2k/r3ka/gbz80/tlcs90/ez80_z80/ds390/pic16/pic14/TININative/ds400/hc08/s08/stm8/pdk14/pdk15 3.9.0 #11195 (MINGW64)
published under GNU General Public License (GPL)
Usage : sdcc [options] filename
Options :-
General options:
--help Display this help
-v --version Display sdcc's version
--verbose Trace calls to the preprocessor, assembler, and linker
-V Execute verbosely. Show sub commands as they are run
-d Output list of mcaro definitions in effect. Use with -E
-D Define macro as in -Dmacro
-I Add to the include (*.h) path, as in -Ipath
-A
-U Undefine macro as in -Umacro
-M Preprocessor option
-W Pass through options to the pre-processor (p), assembler (a) or linker (l)
-S Compile only; do not assemble or link
-c --compile-only Compile and assemble, but do not link
-E --preprocessonly Preprocess only, do not compile
--c1mode Act in c1 mode. The standard input is preprocessed code, the output is assembly code.
-o Place the output into the given path resp. file
--print-search-dirs display the directories in the compiler's search path
--vc messages are compatible with Micro$oft visual studio
--use-stdout send errors to stdout instead of stderr
--nostdlib Do not include the standard library directory in the search path
--nostdinc Do not include the standard include directory in the search path
--less-pedantic Disable some of the more pedantic warnings
--disable-warning <nnnn> Disable specific warning
--Werror Treat the warnings as errors
--debug Enable debugging symbol output
--cyclomatic Display complexity of compiled functions
--std-c89 Use ISO C90 (aka ANSI C89) standard (slightly incomplete)
--std-sdcc89 Use ISO C90 (aka ANSI C89) standard with SDCC extensions
--std-c95 Use ISO C95 (aka ISO C94) standard (slightly incomplete)
--std-c99 Use ISO C99 standard (incomplete)
--std-sdcc99 Use ISO C99 standard with SDCC extensions
--std-c11 Use ISO C11 standard (incomplete)
--std-sdcc11 Use ISO C11 standard with SDCC extensions (default)
--std-c2x Use ISO C2X standard (incomplete)
--std-sdcc2x Use ISO C2X standard with SDCC extensions
--fdollars-in-identifiers Permit '$' as an identifier character
--fsigned-char Make "char" signed by default
--use-non-free Search / include non-free licensed libraries and header files
Code generation options:
-m Set the port to use e.g. -mz80.
-p Select port specific processor e.g. -mpic14 -p16f84
--stack-auto Stack automatic variables
--xstack Use external stack
--int-long-reent Use reentrant calls on the int and long support functions
--float-reent Use reentrant calls on the float support functions
--xram-movc Use movc instead of movx to read xram (xdata)
--callee-saves <func[,func,...]> Cause the called function to save registers instead of the caller
--profile On supported ports, generate extra profiling information
--fomit-frame-pointer Leave out the frame pointer.
--all-callee-saves callee will always save registers used
--stack-probe insert call to function __stack_probe at each function prologue
--no-xinit-opt don't memcpy initialized xram from code
--no-c-code-in-asm don't include c-code as comments in the asm file
--no-peep-comments don't include peephole optimizer comments
--codeseg <name> use this name for the code segment
--constseg <name> use this name for the const segment
--dataseg <name> use this name for the data segment
Optimization options:
--nooverlay Disable overlaying leaf function auto variables
--nogcse Disable the GCSE optimisation
--nolabelopt Disable label optimisation
--noinvariant Disable optimisation of invariants
--noinduction Disable loop variable induction
--noloopreverse Disable the loop reverse optimisation
--no-peep Disable the peephole assembly file optimisation
--no-reg-params On some ports, disable passing some parameters in registers
--peep-asm Enable peephole optimization on inline assembly
--peep-return Enable peephole optimization for return instructions
--no-peep-return Disable peephole optimization for return instructions
--peep-file <file> use this extra peephole file
--opt-code-speed Optimize for code speed rather than size
--opt-code-size Optimize for code size rather than speed
--max-allocs-per-node Maximum number of register assignments considered at each node of the tree decomposition
--nolospre Disable lospre
--allow-unsafe-read Allow optimizations to read any memory location anytime
--nostdlibcall Disable optimization of calls to standard library
Internal debugging options:
--dump-ast Dump front-end AST before generating i-code
--dump-i-code Dump the i-code structure at all stages
--dump-graphs Dump graphs (control-flow, conflict, etc)
--i-code-in-asm Include i-code as comments in the asm file
--fverbose-asm Include code generator comments in the asm output
Linker options:
-l Include the given library in the link
-L Add the next field to the library search path
--lib-path <path> use this path to search for libraries
--out-fmt-ihx Output in Intel hex format
--out-fmt-s19 Output in S19 hex format
--xram-loc <nnnn> External Ram start location
--xram-size <nnnn> External Ram size
--iram-size <nnnn> Internal Ram size
--xstack-loc <nnnn> External Stack start location
--code-loc <nnnn> Code Segment Location
--code-size <nnnn> Code Segment size
--stack-loc <nnnn> Stack pointer initial value
--data-loc <nnnn> Direct data start location
--idata-loc
--no-optsdcc-in-asm Do not emit .optsdcc in asm
Special options for the mcs51 port:
--model-small internal data space is used (default)
--model-medium external paged data space is used
--model-large external data space is used
--model-huge functions are banked, data in external space
--stack-size Tells the linker to allocate this space for stack
--parms-in-bank1 use Bank1 for parameter passing
--pack-iram Tells the linker to pack variables in internal ram (default)
--no-pack-iram Deprecated: Tells the linker not to pack variables in internal ram
--acall-ajmp Use acall/ajmp instead of lcall/ljmp
--no-ret-without-call Do not use ret independent of acall/lcall
Special options for the z80 port:
--callee-saves-bc Force a called function to always save BC
--portmode= Determine PORT I/O mode (z80/z180)
--asm= Define assembler name (rgbds/asxxxx/isas/z80asm)
--codeseg <name> use this name for the code segment
--constseg <name> use this name for the const segment
--dataseg <name> use this name for the data segment
--no-std-crt0 For the z80/gbz80 do not link default crt0.rel
--reserve-regs-iy Do not use IY (incompatible with --fomit-frame-pointer)
--oldralloc Use old register allocator
--fno-omit-frame-pointer Do not omit frame pointer
--emit-externs Emit externs list in generated asm
Special options for the z180 port:
--callee-saves-bc Force a called function to always save BC
--portmode= Determine PORT I/O mode (z80/z180)
--asm= Define assembler name (rgbds/asxxxx/isas/z80asm)
--codeseg <name> use this name for the code segment
--constseg <name> use this name for the const segment
--dataseg <name> use this name for the data segment
--no-std-crt0 For the z80/gbz80 do not link default crt0.rel
--reserve-regs-iy Do not use IY (incompatible with --fomit-frame-pointer)
--oldralloc Use old register allocator
--fno-omit-frame-pointer Do not omit frame pointer
--emit-externs Emit externs list in generated asm
Special options for the r2k port:
--callee-saves-bc Force a called function to always save BC
--portmode= Determine PORT I/O mode (z80/z180)
--asm= Define assembler name (rgbds/asxxxx/isas/z80asm)
--codeseg <name> use this name for the code segment
--constseg <name> use this name for the const segment
--dataseg <name> use this name for the data segment
--no-std-crt0 For the z80/gbz80 do not link default crt0.rel
--reserve-regs-iy Do not use IY (incompatible with --fomit-frame-pointer)
--oldralloc Use old register allocator
--fno-omit-frame-pointer Do not omit frame pointer
--emit-externs Emit externs list in generated asm
Special options for the r3ka port:
--callee-saves-bc Force a called function to always save BC
--portmode= Determine PORT I/O mode (z80/z180)
--asm= Define assembler name (rgbds/asxxxx/isas/z80asm)
--codeseg <name> use this name for the code segment
--constseg <name> use this name for the const segment
--dataseg <name> use this name for the data segment
--no-std-crt0 For the z80/gbz80 do not link default crt0.rel
--reserve-regs-iy Do not use IY (incompatible with --fomit-frame-pointer)
--oldralloc Use old register allocator
--fno-omit-frame-pointer Do not omit frame pointer
--emit-externs Emit externs list in generated asm
Special options for the gbz80 port:
-bo <num> use code bank <num>
-ba <num> use data bank <num>
--callee-saves-bc Force a called function to always save BC
--codeseg <name> use this name for the code segment
--constseg <name> use this name for the const segment
--dataseg <name> use this name for the data segment
--no-std-crt0 For the z80/gbz80 do not link default crt0.rel
Special options for the tlcs90 port:
--callee-saves-bc Force a called function to always save BC
--portmode= Determine PORT I/O mode (z80/z180)
--asm= Define assembler name (rgbds/asxxxx/isas/z80asm)
--codeseg <name> use this name for the code segment
--constseg <name> use this name for the const segment
--dataseg <name> use this name for the data segment
--no-std-crt0 For the z80/gbz80 do not link default crt0.rel
--reserve-regs-iy Do not use IY (incompatible with --fomit-frame-pointer)
--oldralloc Use old register allocator
--fno-omit-frame-pointer Do not omit frame pointer
--emit-externs Emit externs list in generated asm
Special options for the ez80_z80 port:
--callee-saves-bc Force a called function to always save BC
--portmode= Determine PORT I/O mode (z80/z180)
--asm= Define assembler name (rgbds/asxxxx/isas/z80asm)
--codeseg <name> use this name for the code segment
--constseg <name> use this name for the const segment
--dataseg <name> use this name for the data segment
--no-std-crt0 For the z80/gbz80 do not link default crt0.rel
--reserve-regs-iy Do not use IY (incompatible with --fomit-frame-pointer)
--oldralloc Use old register allocator
--fno-omit-frame-pointer Do not omit frame pointer
--emit-externs Emit externs list in generated asm
Special options for the ds390 port:
--model-flat24 use the flat24 model for the ds390 (default)
--stack-8bit use the 8bit stack for the ds390 (not supported yet)
--stack-size Tells the linker to allocate this space for stack
--pack-iram Tells the linker to pack variables in internal ram (default)
--no-pack-iram Deprecated: Tells the linker not to pack variables in internal ram
--stack-10bit use the 10bit stack for ds390 (default)
--use-accelerator generate code for ds390 arithmetic accelerator
--protect-sp-update will disable interrupts during ESP:SP updates
--parms-in-bank1 use Bank1 for parameter passing
Special options for the pic16 port:
--pstack-model= use stack model 'small' (default) or 'large'
-y --extended enable Extended Instruction Set/Literal Offset Addressing mode
--pno-banksel do not generate BANKSEL assembler directives
--obanksel= set banksel optimization level (default=0 no)
--denable-peeps explicit enable of peepholes
--no-optimize-goto do NOT use (conditional) BRA instead of GOTO
--optimize-cmp try to optimize some compares
--optimize-df thoroughly analyze data flow (memory and time intensive!)
--asm= Use alternative assembler
--mplab-comp enable compatibility mode for MPLAB utilities (MPASM/MPLINK)
--link= Use alternative linker
--preplace-udata-with= Place udata variables at another section: udata_acs, udata_ovr, udata_shr
--ivt-loc= Set address of interrupt vector table.
--nodefaultlibs do not link default libraries when linking
--use-crt= use <crt-o> run-time initialization module
--no-crt do not link any default run-time initialization module
--debug-xtra show more debug info in assembly output
--debug-ralloc dump register allocator debug file *.d
--pcode-verbose dump pcode related info
--calltree dump call tree in .calltree file
--gstack trace stack pointer push/pop to overflow
--no-warn-non-free suppress warning on absent --use-non-free option
Special options for the pic14 port:
--debug-xtra show more debug info in assembly output
--no-pcode-opt disable (slightly faulty) optimization on pCode
--stack-size sets the size if the argument passing stack (default: 16, minimum: 4)
--no-extended-instructions forbid use of the extended instruction set (e.g., ADDFSR)
--no-warn-non-free suppress warning on absent --use-non-free option
Special options for the TININative port:
--model-flat24 use the flat24 model for the ds390 (default)
--stack-8bit use the 8bit stack for the ds390 (not supported yet)
--stack-size Tells the linker to allocate this space for stack
--pack-iram Tells the linker to pack variables in internal ram (default)
--no-pack-iram Deprecated: Tells the linker not to pack variables in internal ram
--stack-10bit use the 10bit stack for ds390 (default)
--use-accelerator generate code for ds390 arithmetic accelerator
--protect-sp-update will disable interrupts during ESP:SP updates
--parms-in-bank1 use Bank1 for parameter passing
--tini-libid <nnnn> LibraryID used in -mTININative
Special options for the ds400 port:
--model-flat24 use the flat24 model for the ds400 (default)
--stack-8bit use the 8bit stack for the ds400 (not supported yet)
--stack-size Tells the linker to allocate this space for stack
--pack-iram Tells the linker to pack variables in internal ram (default)
--no-pack-iram Deprecated: Tells the linker not to pack variables in internal ram
--stack-10bit use the 10bit stack for ds400 (default)
--use-accelerator generate code for ds400 arithmetic accelerator
--protect-sp-update will disable interrupts during ESP:SP updates
--parms-in-bank1 use Bank1 for parameter passing
Special options for the hc08 port:
--model-small 8-bit address space for data
--model-large 16-bit address space for data (default)
--out-fmt-elf Output executable in ELF format
--oldralloc Use old register allocator
Special options for the s08 port:
--model-small 8-bit address space for data
--model-large 16-bit address space for data (default)
--out-fmt-elf Output executable in ELF format
--oldralloc Use old register allocator
Special options for the stm8 port:
--model-medium 16-bit address space for both data and code (default)
--model-large 16-bit address space for data, 24-bit for code
--codeseg <name> use this name for the code segment
--constseg <name> use this name for the const segment
--out-fmt-elf Output executable in ELF format