diff options
| -rw-r--r-- | views.c | 77 |
1 files changed, 58 insertions, 19 deletions
@@ -1,3 +1,7 @@ +#include <string.h> +#include "pci.h" + + /** * new type to define an enum view */ @@ -26,7 +30,8 @@ pcilib_view_formula_s { *@param[in] after - the new value of before substring *@return the modified txt string */ -char *formula_replace (const char *txt, const char *before, const char *after) +static char* +pcilib_view_formula_replace (const char *txt, const char *before, const char *after) { const char *pos; char *return_txt; @@ -84,14 +89,15 @@ char *formula_replace (const char *txt, const char *before, const char *after) return return_txt; } -/* +/** * function used to get the substring of a string s, from the starting and ending indexes * @param[in] s string containing the substring we want to extract. * @param[in] start the start index of the substring. * @param[in] end the ending index of the substring. * @return the extracted substring. */ -char *str_sub (const char *s, unsigned int start, unsigned int end) +static char* +pcilib_view_str_sub (const char *s, unsigned int start, unsigned int end) { char *new_s = NULL; @@ -117,16 +123,52 @@ char *str_sub (const char *s, unsigned int start, unsigned int end) return new_s; } -static int -pcilib_view_compute_plain_registers{ - /* hsould i used regexp.h??? or compile everythin myself? */ +/** + * get the bank name associated with a register name + */ +static char* +pcilib_view_get_bank_from_reg_name(pcilib_t* ctx,char* reg_name){ + int k; + for(k=0;ctx->registers[k].bits;k++){ + if(!(strcasecmp(reg_name,ctx->registers[k].name))){ + return ctx->banks[pcilib_find_register_bank_by_addr(ctx,ctx->registers[k].bank)].name; + } + } } +/** + * replace plain registers name in a formula by their value + */ +static int +pcilib_view_compute_plain_registers(pcilib_t* ctx, char* formula){ + int j,k; + char* substr,substr2; + char temp[66]; + pcilib_register_value_t value; + + /*we get recursively all registers of string , and if they are not equel to '@reg', then we get their value and put it in formula*/ + for(j=0;j<strlen((char*)formula);j++){ + if(formula[j]=='@'){ + k=j+1; + while((formula[k]!=' ' && formula[k]!=')' && formula[k]!='/' && formula[k]!='+' && formula[k]!='-' && formula[k]!='*' && formula[k]!='=') && (k<strlen((char*)formula))){ + k++; + } + substr2=pcilib_view_str_sub((char*)formula,j,k-1); /**< we get the name of the register+@*/ + substr=pcilib_view_str_sub(substr2,1,k-j/*length of substr2*/); /**< we get the name of the register*/ + + if((strcasecmp(substr,"reg")){ + /* we get the bank name associated to the register, and read its value*/ + pcilib_read_register(ctx, pcilib_view_get_bank_from_reg_name(ctx, substr),substr,&value); + /* we put the value in formula*/ + sprintf(temp,"%i",value); + formula = str_replace(formula,substr2,temp); + } + } + } +} - - -/* +/** * this function calls the python script and the function "evaluate" in it to evaluate the given formula *@param[in] the formula to be evaluated *@return the integer value of the evaluated formula (maybe go to float instead) @@ -178,7 +220,7 @@ pcilib_view_eval_formula(char* formula){ static int -pcilib_view_apply_read_formula(pcilib_t* ctx, char* formula, pcilib_register_value_t reg_value, pcilib_register_value_t* out_value) +pcilib_view_apply_formula(pcilib_t* ctx, char* formula, pcilib_register_value_t reg_value, pcilib_register_value_t* out_value) { /* when applying a formula, we need to: 1) compute the values of all registers present in plain name in the formulas and replace their name with their value : for example, if we have the formula" ((1./4)*(@reg - 1200)) if @freq==0 else ((3./10)*(@reg - 1000)) " we need to get the value of the register "freq" @@ -196,18 +238,13 @@ pcilib_view_apply_read_formula(pcilib_t* ctx, char* formula, pcilib_register_val sprintf(reg_value_string,"%lu",reg_value); /*computation of plain registers in the formula*/ - formula=pcilib_view_formula_compute_plain_registers(formula); + formula=pcilib_view_formula_compute_plain_registers(formula,ctx); /* computation of @reg with register value*/ formula=pcilib_view_formula_replace(formula,"@reg",reg_value_string); /* evaluation of the formula*/ - *out_value=(pcilib_register_value_t) pcilib_view_eval_formula(formula); - -} + *out_value=*(pcilib_register_value_t*) pcilib_view_eval_formula(formula); -static int -pcilib_view_apply_write_formula() -{ } int pcilib_read_view(pcilib_t *ctx, const char *bank, const char *regname, const char *view/*, const char *unit*/, size_t value_size, void *value) @@ -250,7 +287,8 @@ int pcilib_read_view(pcilib_t *ctx, const char *bank, const char *regname, const while((ctx->register_ctx[i].formulas[j].name)){ if(!(strcasecmp(ctx->register_ctx[i].formulas[j].name))){ /* when we have found the correct view of type formula, we apply the formula, that get the good value for return*/ - pcilib_view_apply_read_formula(ctx->register_ctx[i].formulas[j].read_formula,temp_value, value,....); + pcilib_view_apply_formula(ctx, ctx->register_ctx[i].formulas[j].read_formula,temp_value,value); + value_size=sizeof(int); return 0; } j++; @@ -260,4 +298,5 @@ int pcilib_read_view(pcilib_t *ctx, const char *bank, const char *regname, const return PCILIB_ERROR_NOTAVAILABLE; } - + int pcilib_write_view(pcilib_t *ctx, const char *bank, const char *regname, const char *view/*, const char *unit*/, size_t value_size, void *value){ + |