mirror/btstack
1
0
Fork 0
mirror of https://github.com/bluekitchen/btstack.git synced 2025-01-01 00:28:18 +00:00
Code Issues Packages Projects Releases Wiki Activity

raspi: detect raspberry pi model, use 3 mbps for 3A+ and 3B+

Browse Source
This commit is contained in:
Dirk Helbig 2019-02-03 21:16:34 +01:00 committed by Matthias Ringwald
parent 99dd78454e
commit 63ff2b1e64
4 changed files with 83 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
port/raspi/Makefile
View File

@ -16,6 +16,7 @@ CORE += \
main.c \
wav_util.c \
btstack_stdin_posix.c \
raspi_get_model.c
# examples
include ${BTSTACK_ROOT}/example/Makefile.inc

14
port/raspi/main.c
View File

@ -73,6 +73,8 @@
#include "btstack_chipset_bcm_download_firmware.h"
#include "btstack_control_raspi.h"
#include "raspi_get_model.h"
int btstack_main(int argc, const char * argv[]);
typedef enum {
@ -322,12 +324,16 @@ int main(int argc, const char * argv[]){
transport_config.flowcontrol = 0;
break;
case UART_HARDWARE_FLOW:
// Raspberry Pi Zero W
// Raspberry Pi Zero W gpio 45
// Raspberry Pi 3A+ vgpio 129 but WLAN + BL
// Raspberry Pi 3B+ vgpio 129 but WLAN + BL
bt_reg_en_pin = 45;
transport_config.baudrate_main = 921600;
transport_config.flowcontrol = 1;
transport_config.baudrate_main = 3000000;
transport_config.flowcontrol = 1;
// 3 mbps does not work on Zero W (investigation pending)
if (raspi_get_model() == MODEL_ZERO_W){
transport_config.baudrate_main = 921600;
}
break;
}
printf("%s, %u, BT_REG_EN at GPIO %u\n", transport_config.flowcontrol ? "H4":"H5", transport_config.baudrate_main, bt_reg_en_pin);

59
port/raspi/raspi_get_model.c Normal file
View File

@ -0,0 +1,59 @@
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include "raspi_get_model.h"
/**
* Raspberry Pi model detection based on,
* https://elinux.org/RPi_HardwareHistory
**/
int raspi_get_model()
{
FILE *f = fopen( "/proc/cpuinfo", "rb" );
if( f == NULL )
{
perror( "can't open cpuinfo!" );
return MODEL_UNKNOWN;
}
int ret = 0;
uint32_t revision = 0;
uint32_t model = MODEL_UNKNOWN;
char line[100] = { 0 };
char *ptr = NULL;
for(; ret < 1;)
{
ptr = fgets( line, 100, f );
if( ptr == NULL )
break;
ret = sscanf( line, "Revision : %x\n", &revision );
}
fclose( f );
switch( revision )
{
case 0x9000c1:
model = MODEL_ZERO_W;
break;
case 0xa02082:
case 0xa22082:
case 0xa32082:
model = MODEL_3B;
break;
case 0xa020d3:
model = MODEL_3BPLUS;
break;
case 0x9020e0:
model = MODEL_3APLUS;
break;
default:
break;
}
return model;
}

13
port/raspi/raspi_get_model.h Normal file
View File

@ -0,0 +1,13 @@
#ifndef _RASPI_GET_MODEL_
#define _RASPI_GET_MODEL_
#define MODEL_UNKNOWN 0
#define MODEL_ZERO_W 1
#define MODEL_3B 2
#define MODEL_3BPLUS 3
#define MODEL_3APLUS 4
int raspi_get_model();
#endif // _RASPI_GET_MODEL_