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Add BME280 over SPI

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This commit is contained in:
Edward Emelianov
2025-10-05 00:10:02 +03:00
parent f994799353
commit 17b4d714e0
16 changed files with 826 additions and 39 deletions
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65
F3:F303/MLX90640-allsky/proto.c
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@@ -20,6 +20,7 @@
#include <stm32f3.h>
#include <string.h>
#include "hardware.h"
#include "i2c.h"
#include "mlxproc.h"
#include "proto.h"
@@ -64,36 +65,41 @@ void chsendfun(int sendto){
#define printfl(x,n) do{sendfun->S(float2str(x, n));}while(0)
// common names for frequent keys
const char *Timage = "TIMAGE=";
const char *Sensno = "SENSNO=";
const char* const Timage = "TIMAGE";
const char* const Image = "IMAGE";
static const char *const Sensno = "SENSNO=";
static const char *OK = "OK\n", *ERR = "ERR\n";
const char *helpstring =
static const char *const OK = "OK\n", *const ERR = "ERR\n";
const char *const helpstring =
"https://github.com/eddyem/stm32samples/tree/master/F3:F303/MLX90640multi build#" BUILD_NUMBER " @ " BUILD_DATE "\n"
" management of single IR bolometer MLX90640\n"
"aa - change I2C address to a (a should be non-shifted value!!!)\n"
"c - continue MLX\n"
"dn - draw nth image in ASCII\n"
"gn - get nth image 'as is' - float array of 768x4 bytes\n"
"i0..4 - setup I2C with speed 10k, 100k, 400k, 1M or 2M (experimental!)\n"
"l - list active sensors IDs\n"
"mn - show temperature map of nth image\n"
"tn - show nth image aquisition time\n"
"B - reinit BME280\n"
"E - get environment parameters (temperature etc)\n"
"G - get MLX state\n"
"R - reset device\n"
"T - print current Tms\n"
" Debugging options:\n"
"aa - change I2C address to a (a should be non-shifted value!!!)\n"
"c - continue MLX\n"
"i0..4 - setup I2C with speed 10k, 100k, 400k, 1M or 2M (experimental!)\n"
"p - pause MLX\n"
"s - stop MLX (and start from zero @ 'c')\n"
"tn - show nth image aquisition time\n"
"C - \"cartoon\" mode on/off (show each new image) - USB only!!!\n"
"Dn - dump MLX parameters for sensor number n\n"
"G - get MLX state\n"
"Ia addr [n] - set device address for interactive work or (with n) change address of n'th sensor\n"
"Ir reg n - read n words from 16-bit register\n"
"Iw words - send words (hex/dec/oct/bin) to I2C\n"
"Is - scan I2C bus\n"
"T - print current Tms\n"
"Us - send string 's' to other interface\n"
;
TRUE_INLINE const char *setupI2C(char *buf){
static const char *speeds[I2C_SPEED_AMOUNT] = {
static const char * const speeds[I2C_SPEED_AMOUNT] = {
[I2C_SPEED_10K] = "10K",
[I2C_SPEED_100K] = "100K",
[I2C_SPEED_400K] = "400K",
@@ -207,7 +213,7 @@ TRUE_INLINE void dumpparams(const char *buf){
if(N < 0){ sendfun->S(ERR); return; }
MLX90640_params *params = mlx_getparams(N);
if(!params){ sendfun->S(ERR); return; }
sendfun->S(Sensno); sendfun->S(i2str(N)); N();
N(); sendfun->S(Sensno); sendfun->S(i2str(N));
sendfun->S("\nkVdd="); printi(params->kVdd);
sendfun->S("\nvdd25="); printi(params->vdd25);
sendfun->S("\nKvPTAT="); printfl(params->KvPTAT, 4);
@@ -263,15 +269,15 @@ TRUE_INLINE void getst(){
sendfun->S(states[s]); N();
}
// `draw`==1 - draw, ==0 - show T map, 2 - send raw float array with prefix 'SENSNO=x\nTimage=y\n' and postfix "ENDIMAGE\n"
// `draw`==1 - draw, ==0 - show T map, 2 - send raw float array with prefix 'TIMAGEX=y\nIMAGEX=' and postfix "ENDIMAGE\n"
static const char *drawimg(const char *buf, int draw){
int sensno = getsensnum(buf);
if(sensno > -1){
uint32_t T = mlx_lastimT(sensno);
fp_t *img = mlx_getimage(sensno);
if(img){
sendfun->S(Sensno); sendfun->S(u2str(sensno)); N();
sendfun->S(Timage); sendfun->S(u2str(T)); N();
//sendfun->S(Sensno); sendfun->S(u2str(sensno)); N();
sendfun->S(Timage); sendfun->P('0'+sensno); sendfun->P('='); sendfun->S(u2str(T)); N();
switch(draw){
case 0:
dumpIma(img);
@@ -280,7 +286,7 @@ static const char *drawimg(const char *buf, int draw){
drawIma(img);
break;
case 2:
{
sendfun->S(Image); sendfun->P('0'+sensno); sendfun->P('=');
uint8_t *d = (uint8_t*)img;
uint32_t _2send = MLX_PIXNO * sizeof(float);
// send by portions of 256 bytes (as image is larger than ringbuffer)
@@ -290,8 +296,8 @@ static const char *drawimg(const char *buf, int draw){
_2send -= portion;
d += portion;
}
}
sendfun->S("ENDIMAGE"); N();
break;
}
return NULL;
}
@@ -317,10 +323,22 @@ TRUE_INLINE void listactive(){
static void getimt(const char *buf){
int sensno = getsensnum(buf);
if(sensno > -1){
sendfun->S(Timage); sendfun->S(u2str(mlx_lastimT(sensno))); N();
sendfun->S(Timage); sendfun->P('0'+sensno); sendfun->P('='); sendfun->S(u2str(mlx_lastimT(sensno))); N();
}else sendfun->S(ERR);
}
TRUE_INLINE void getenv(){
bme280_t env;
if(!get_environment(&env)) sendfun->S("BADENVIRONMENT\n");
sendfun->S("TEMPERATURE="); sendfun->S(float2str(env.T, 2));
sendfun->S("\nPRESSURE_HPA="); sendfun->S(float2str(env.P/100.f, 2));
sendfun->S("\nPRESSURE_MM="); sendfun->S(float2str(env.P * 0.00750062f, 2));
sendfun->S("\nHUMIDITY="); sendfun->S(float2str(env.H, 2));
sendfun->S("\nTEMP_DEW="); sendfun->S(float2str(env.Tdew, 1));
sendfun->S("\nT_MEASUREMENT="); sendfun->S(u2str(env.Tmeas));
N();
}
/**
* @brief parse_cmd - user string parser
* @param buf - user data
@@ -386,12 +404,21 @@ const char *parse_cmd(char *buf, int sendto){
break;
case 's':
mlx_stop(); return OK;
case 'B':
if(bme_init()) return OK;
return ERR;
case 'C':
if(sendto != SEND_USB) return ERR;
cartoon = !cartoon; return OK;
case 'E':
getenv();
break;
case 'G':
getst();
break;
case 'R':
NVIC_SystemReset();
break;
case 'T':
sendfun->S("T="); sendfun->S(u2str(Tms)); N();
break;
@@ -420,7 +447,7 @@ void dumpIma(const fp_t im[MLX_PIXNO]){
#define GRAY_LEVELS (16)
// 16-level character set ordered by fill percentage (provided by user)
static const char* CHARS_16 = " .':;+*oxX#&%B$@";
static const char *const CHARS_16 = " .':;+*oxX#&%B$@";
// draw image in ASCII-art
void drawIma(const fp_t im[MLX_PIXNO]){
// Find min and max values