Commit 5a7cc7c9 authored by schneider's avatar schneider
Browse files

change(spo2): Allocate buffers on heap

parent beab46e5
...@@ -5,10 +5,13 @@ ...@@ -5,10 +5,13 @@
#include "py/obj.h" #include "py/obj.h"
#include "py/runtime.h" #include "py/runtime.h"
static mp_obj_t mp_maxim_rd177(mp_obj_t ir, mp_obj_t red) struct spo2_memory {
{
uint32_t pun_ir_buffer[500]; uint32_t pun_ir_buffer[500];
uint32_t pun_red_buffer[500]; uint32_t pun_red_buffer[500];
};
static mp_obj_t mp_maxim_rd177(mp_obj_t ir, mp_obj_t red)
{
int32_t n_ir_buffer_length; int32_t n_ir_buffer_length;
int32_t pn_spo2 = 0; int32_t pn_spo2 = 0;
...@@ -39,16 +42,24 @@ static mp_obj_t mp_maxim_rd177(mp_obj_t ir, mp_obj_t red) ...@@ -39,16 +42,24 @@ static mp_obj_t mp_maxim_rd177(mp_obj_t ir, mp_obj_t red)
); );
} }
struct spo2_memory *m =
(struct spo2_memory *)MP_STATE_PORT(spo2_memory);
if (!m) {
/* Will raise an exception if out of memory: */
m = m_malloc(sizeof(struct spo2_memory));
MP_STATE_PORT(spo2_memory) = m;
}
n_ir_buffer_length = ir_len; n_ir_buffer_length = ir_len;
for (size_t i = 0; i < ir_len; i++) { for (size_t i = 0; i < ir_len; i++) {
pun_ir_buffer[i] = mp_obj_get_int(ir_elem[i]); m->pun_ir_buffer[i] = mp_obj_get_int(ir_elem[i]);
pun_red_buffer[i] = mp_obj_get_int(red_elem[i]); m->pun_red_buffer[i] = mp_obj_get_int(red_elem[i]);
} }
maxim_heart_rate_and_oxygen_saturation( maxim_heart_rate_and_oxygen_saturation(
pun_ir_buffer, m->pun_ir_buffer,
n_ir_buffer_length, n_ir_buffer_length,
pun_red_buffer, m->pun_red_buffer,
&pn_spo2, &pn_spo2,
&pch_spo2_valid, &pch_spo2_valid,
&pn_heart_rate, &pn_heart_rate,
......
...@@ -114,4 +114,5 @@ typedef long mp_off_t; ...@@ -114,4 +114,5 @@ typedef long mp_off_t;
#define MICROPY_PORT_ROOT_POINTERS \ #define MICROPY_PORT_ROOT_POINTERS \
const char *readline_hist[16]; \ const char *readline_hist[16]; \
mp_obj_t interrupt_callbacks[EPIC_INT_NUM]; \ mp_obj_t interrupt_callbacks[EPIC_INT_NUM]; \
void *spo2_memory; \
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