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Merge branch 'master' into experimental_varlen

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* master:
  translation
  document offsets
  textual
  textual
  typo
  'hf mf sim' full-byte anti-collision frame support
This commit is contained in:
Philippe Teuwen 2019-04-22 21:39:38 +02:00
commit 9602e641e2
8 changed files with 175 additions and 185 deletions
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5
common/i2c.c
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@ -26,7 +26,8 @@
volatile unsigned long c;
// 直接使用循环来延时，一个循环 6 条指令，48M， Delay=1 大概为 200kbps
// Direct use the loop to delay. 6 instructions loop, Masterclock 48Mhz,
// delay=1 is about 200kbps
// timer.
// I2CSpinDelayClk(4) = 12.31us
// I2CSpinDelayClk(1) = 3.07us
@ -89,11 +90,9 @@ void I2C_init(void) {
AT91C_BASE_PIOA->PIO_OER |= (GPIO_SCL | GPIO_SDA | GPIO_RST);
AT91C_BASE_PIOA->PIO_PER |= (GPIO_SCL | GPIO_SDA | GPIO_RST);
bool isok = (SCL_read && SDA_read);
if (!isok)
I2C_recovery();
}
// set the reset state