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Code Issues Releases Activity

removed SYSTICK_DelayUs()

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This commit is contained in:
OneOfEleven
2023-11-05 20:26:42 +00:00
parent b438d7a903
commit 465d7333e3
10 changed files with 43 additions and 65 deletions
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46
driver/i2c.c
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@ -23,25 +23,25 @@
void I2C_Start(void)
{
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
}
void I2C_Stop(void)
{
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
}
uint8_t I2C_Read_fast(bool bFinal)
@ -97,31 +97,31 @@ uint8_t I2C_Read(bool bFinal)
for (i = 0; i < 8; i++)
{
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
Data <<= 1;
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
if (GPIO_CheckBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA))
Data |= 1U;
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
}
PORTCON_PORTA_IE &= ~PORTCON_PORTA_IE_A11_MASK;
PORTCON_PORTA_OD |= PORTCON_PORTA_OD_A11_BITS_ENABLE;
GPIOA->DIR |= GPIO_DIR_11_BITS_OUTPUT;
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
if (bFinal)
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
else
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
return Data;
}
@ -132,7 +132,7 @@ int I2C_Write(uint8_t Data)
int ret = -1;
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
for (i = 0; i < 8; i++) {
if ((Data & 0x80) == 0) {
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
@ -140,20 +140,20 @@ int I2C_Write(uint8_t Data)
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
}
Data <<= 1;
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
}
PORTCON_PORTA_IE |= PORTCON_PORTA_IE_A11_BITS_ENABLE;
PORTCON_PORTA_OD &= ~PORTCON_PORTA_OD_A11_MASK;
GPIOA->DIR &= ~GPIO_DIR_11_MASK;
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
for (i = 0; i < 255; i++) {
if (GPIO_CheckBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA) == 0) {
@ -163,7 +163,7 @@ int I2C_Write(uint8_t Data)
}
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
SYSTICK_Delay250ns(4);
PORTCON_PORTA_IE &= ~PORTCON_PORTA_IE_A11_MASK;
PORTCON_PORTA_OD |= PORTCON_PORTA_OD_A11_BITS_ENABLE;
GPIOA->DIR |= GPIO_DIR_11_BITS_OUTPUT;