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adjust clock stretch

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This commit is contained in:
Michael Graff 2015-07-14 11:05:53 -07:00
parent dece240830
commit 4b8f5342cd
1 changed files with 8 additions and 8 deletions
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16
cores/esp8266/core_esp8266_si2c.c
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@ -1,9 +1,9 @@
/*
/*
si2c.c - Software I2C library for esp8266
Copyright (c) 2015 Hristo Gochkov. All rights reserved.
This file is part of the esp8266 core for Arduino environment.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
@ -26,10 +26,10 @@ unsigned char twi_dcount = 18;
static unsigned char twi_sda, twi_scl;
#define SDA_LOW() (GPES = (1 << twi_sda)) //Enable SDA (becomes output and since GPO is 0 for the pin, it will pull the line low)
#define SDA_HIGH() (GPEC = (1 << twi_sda)) //Disable SDA (becomes input and since it has pullup it will go high)
#define SDA_HIGH() (GPEC = (1 << twi_sda)) //Disable SDA (becomes input and since it has pullup it will go high)
#define SDA_READ() ((GPI & (1 << twi_sda)) != 0)
#define SCL_LOW() (GPES = (1 << twi_scl))
#define SCL_HIGH() (GPEC = (1 << twi_scl))
#define SCL_LOW() (GPES = (1 << twi_scl))
#define SCL_HIGH() (GPEC = (1 << twi_scl))
#define SCL_READ() ((GPI & (1 << twi_scl)) != 0)
#ifndef FCPU80
@ -37,9 +37,9 @@ static unsigned char twi_sda, twi_scl;
#endif
#if F_CPU == FCPU80
#define TWI_CLOCK_STRETCH 200
#define TWI_CLOCK_STRETCH 800
#else
#define TWI_CLOCK_STRETCH 400
#define TWI_CLOCK_STRETCH 1600
#endif
void twi_setClock(unsigned int freq){
@ -99,7 +99,7 @@ static bool twi_write_stop(void){
twi_delay(twi_dcount);
SDA_HIGH();
twi_delay(twi_dcount);
return true;
}