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eeprom handling works now

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This commit is contained in:
Wolfgang Hottgenroth
2017-06-12 11:52:46 +02:00
parent cbb8f8d188
commit 404b3f7f7a
3 changed files with 61 additions and 43 deletions
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51
my_src/eeprom.c
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@ -28,26 +28,61 @@ static void __EEPROM_CS(GPIO_PinState v) {
HAL_GPIO_WritePin(EEPROM_CS_GPIO_Port, EEPROM_CS_Pin, v);
}
static void __HAL_SPI_Transmit_One_ByValue(SPI_HandleTypeDef *hspi, uint8_t c) {
HAL_SPI_Transmit(hspi, &c, 1, HAL_MAX_DELAY);
uint8_t eepromReadStatus() {
struct {
uint8_t rdsr;
uint8_t data;
} txMsg = {
.rdsr = EEPROM_RDSR
}, rxMsg;
__EEPROM_CS(LOW);
HAL_SPI_TransmitReceive(&hspi1, &txMsg, &rxMsg, 2, HAL_MAX_DELAY);
__EEPROM_CS(HIGH);
return rxMsg.data;
}
void eepromWren() {
struct {
uint8_t wren;
} txMsg = {
.wren = EEPROM_WREN
};
__EEPROM_CS(LOW);
HAL_SPI_Transmit(&hspi1, &txMsg, 1, HAL_MAX_DELAY);
__EEPROM_CS(HIGH);
}
void eepromWrdi() {
struct {
uint8_t wrdi;
} txMsg = {
.wrdi = EEPROM_WRDI
};
__EEPROM_CS(LOW);
HAL_SPI_Transmit(&hspi1, &txMsg, 1, HAL_MAX_DELAY);
__EEPROM_CS(HIGH);
}
void eepromWrite(uint16_t addr, uint8_t *buf, uint8_t len) {
struct {
uint8_t wren;
uint8_t write;
uint16_t addr;
uint8_t data[32];
} msg = {
.wren = EEPROM_WREN,
.write = EEPROM_WRITE,
.addr = addr
};
memcpy(msg.data, buf, len);
eepromWren();
__EEPROM_CS(LOW);
HAL_SPI_Transmit(&hspi1, &msg, ((uint16_t)(len+4)), HAL_MAX_DELAY);
HAL_SPI_Transmit(&hspi1, &msg, ((uint16_t)(len+3)), HAL_MAX_DELAY);
__EEPROM_CS(HIGH);
}
@ -66,9 +101,5 @@ void eepromRead(uint16_t addr, uint8_t *buf, uint8_t len) {
HAL_SPI_TransmitReceive(&hspi1, &txMsg, &rxMsg, ((uint16_t)(len+3)), HAL_MAX_DELAY);
__EEPROM_CS(HIGH);
// __EEPROM_CS(LOW);
// __HAL_SPI_Transmit_One_ByValue(&hspi1, EEPROM_READ);
// HAL_SPI_Transmit(&hspi1, &addr, 2, HAL_MAX_DELAY);
// HAL_SPI_Receive(&hspi1, buf, ((uint16_t)len), HAL_MAX_DELAY);
// __EEPROM_CS(HIGH);
memcpy(buf, rxMsg.data, len);
}