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This commit is contained in:
Armel FAUVEAU
2024-08-16 00:11:09 +02:00
parent 7c53df8d2b
commit 74862d1ac2
95 changed files with 15257 additions and 15258 deletions
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208
driver/i2c.c
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@@ -22,143 +22,143 @@
void I2C_Start(void)
{
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
SYSTICK_DelayUs(1);
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
SYSTICK_DelayUs(1);
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
SYSTICK_DelayUs(1);
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
SYSTICK_DelayUs(1);
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
}
void I2C_Stop(void)
{
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
SYSTICK_DelayUs(1);
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
SYSTICK_DelayUs(1);
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
SYSTICK_DelayUs(1);
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
SYSTICK_DelayUs(1);
}
uint8_t I2C_Read(bool bFinal)
{
uint8_t i, Data;
uint8_t i, Data;
PORTCON_PORTA_IE |= PORTCON_PORTA_IE_A11_BITS_ENABLE;
PORTCON_PORTA_OD &= ~PORTCON_PORTA_OD_A11_MASK;
GPIOA->DIR &= ~GPIO_DIR_11_MASK;
PORTCON_PORTA_IE |= PORTCON_PORTA_IE_A11_BITS_ENABLE;
PORTCON_PORTA_OD &= ~PORTCON_PORTA_OD_A11_MASK;
GPIOA->DIR &= ~GPIO_DIR_11_MASK;
Data = 0;
for (i = 0; i < 8; i++) {
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
Data <<= 1;
SYSTICK_DelayUs(1);
if (GPIO_CheckBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA)) {
Data |= 1U;
}
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
}
Data = 0;
for (i = 0; i < 8; i++) {
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
Data <<= 1;
SYSTICK_DelayUs(1);
if (GPIO_CheckBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA)) {
Data |= 1U;
}
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
}
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);
if (bFinal) {
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
} else {
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
}
SYSTICK_DelayUs(1);
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
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);
if (bFinal) {
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
} else {
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
}
SYSTICK_DelayUs(1);
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
return Data;
return Data;
}
int I2C_Write(uint8_t Data)
{
uint8_t i;
int ret = -1;
uint8_t i;
int ret = -1;
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
for (i = 0; i < 8; i++) {
if ((Data & 0x80) == 0) {
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
} else {
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
}
Data <<= 1;
SYSTICK_DelayUs(1);
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
}
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
for (i = 0; i < 8; i++) {
if ((Data & 0x80) == 0) {
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
} else {
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
}
Data <<= 1;
SYSTICK_DelayUs(1);
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
}
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);
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
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);
GPIO_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
for (i = 0; i < 255; i++) {
if (GPIO_CheckBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA) == 0) {
ret = 0;
break;
}
}
for (i = 0; i < 255; i++) {
if (GPIO_CheckBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA) == 0) {
ret = 0;
break;
}
}
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
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_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
GPIO_ClearBit(&GPIOA->DATA, GPIOA_PIN_I2C_SCL);
SYSTICK_DelayUs(1);
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_SetBit(&GPIOA->DATA, GPIOA_PIN_I2C_SDA);
return ret;
return ret;
}
int I2C_ReadBuffer(void *pBuffer, uint8_t Size)
{
uint8_t *pData = (uint8_t *)pBuffer;
uint8_t i;
uint8_t *pData = (uint8_t *)pBuffer;
uint8_t i;
for (i = 0; i < Size - 1; i++) {
SYSTICK_DelayUs(1);
pData[i] = I2C_Read(false);
}
for (i = 0; i < Size - 1; i++) {
SYSTICK_DelayUs(1);
pData[i] = I2C_Read(false);
}
SYSTICK_DelayUs(1);
pData[i] = I2C_Read(true);
SYSTICK_DelayUs(1);
pData[i] = I2C_Read(true);
return Size;
return Size;
}
int I2C_WriteBuffer(const void *pBuffer, uint8_t Size)
{
const uint8_t *pData = (const uint8_t *)pBuffer;
uint8_t i;
const uint8_t *pData = (const uint8_t *)pBuffer;
uint8_t i;
for (i = 0; i < Size; i++) {
if (I2C_Write(*pData++) < 0) {
return -1;
}
}
for (i = 0; i < Size; i++) {
if (I2C_Write(*pData++) < 0) {
return -1;
}
}
return 0;
return 0;
}