circuitpython/ports/teensy/reg.c

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#include <stdio.h>
#include <string.h>
#include "py/runtime.h"
#include "reg.h"
#if MICROPY_REG
mp_obj_t reg_cmd(void *base, reg_t *reg, mp_uint_t num_regs, uint n_args, const mp_obj_t *args) {
if (n_args == 0) {
// dump all regs
for (mp_uint_t reg_idx = 0; reg_idx < num_regs; reg_idx++, reg++) {
printf(" %-8s @0x%08x = 0x%08lx\n",
reg->name, (mp_uint_t)base + reg->offset, *(uint32_t *)((uint8_t *)base + reg->offset));
}
return mp_const_none;
}
mp_uint_t addr = 0;
if (MP_OBJ_IS_STR(args[0])) {
const char *name = mp_obj_str_get_str(args[0]);
mp_uint_t reg_idx;
for (reg_idx = 0; reg_idx < num_regs; reg_idx++, reg++) {
if (strcmp(name, reg->name) == 0) {
break;
}
}
if (reg_idx >= num_regs) {
printf("Unknown register: '%s'\n", name);
return mp_const_none;
}
addr = (mp_uint_t)base + reg->offset;
} else {
addr = (mp_uint_t)base + mp_obj_get_int(args[0]);
}
if (n_args < 2) {
// get
printf("0x%08lx\n", *(uint32_t *)addr);
} else {
*(uint32_t *)addr = mp_obj_get_int(args[1]);
}
return mp_const_none;
}
#endif