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器件型号：RM57L843 主题中讨论的其他器件：HALCOGEN
工具与软件：
我认为在配置 SPI 以便与 TPS65381AQDAPRQ1进行通信时遇到了问题。 我认为我已经配置了一切正常、但它不起作用...
我在调用 main ()之前把 SPI 配置放在_c_int00函数中,配置代码看起来像这样。
uint32_t i = 3000000;
for(;i>0;) {
i--;
}
/* Return control and status register values to default */
mibspiREG2->GCR0 = 0u;
/* Bring MIBSPI channel out of reset */
mibspiREG2->GCR0 = 1u;
/* Data format 0 */
mibspiREG2->FMT0 = (uint32)((uint32)0U << 24U) /* wdelay */
| (uint32)((uint32)0U << 23U) /* parity Polarity */
| (uint32)((uint32)0U << 22U) /* parity enable */
| (uint32)((uint32)0U << 21U) /* wait on enable */
| (uint32)((uint32)0U << 20U) /* shift direction */
| (uint32)((uint32)0U << 17U) /* clock polarity */
| (uint32)((uint32)0U << 16U) /* clock phase */
| (uint32)((uint32)19 << 8U) /* baudrate prescale - derive SPICLK from VCLK
@note: the clock rate (MHz) for data format x can be calculated: VCLK (80MHz) / (PRESCALEx + 1) */
| (uint32)((uint32)16U << 0U); /* data word length */
/* Initialize port - set pins as functional */
mibspiREG2->PC0 = 0u;
mibspiREG2->PC0 = mibspiREG2->PC0
| (uint32)((uint32)1U << 25U) /* SOMI[1] */
| (uint32)((uint32)1U << 17U) /* SIMO[1] */
| (uint32)((uint32)1U << 11U) /* SOMI[0] */
| (uint32)((uint32)1U << 10U) /* SIMO[0] */
| (uint32)((uint32)1U << 9U) /* CLK */
| (uint32)((uint32)0U << 8U) /* ENA */
| (uint32)((uint32)1U << 5U) /* SCS[5] */
| (uint32)((uint32)1U << 4u) /* SCS[4] */
| (uint32)((uint32)1U << 3u) /* SCS[3] */
| (uint32)((uint32)1U << 2u) /* SCS[2] */
| (uint32)((uint32)1U << 1u) /* SCS[1] */
| (uint32)((uint32)1U << 0u); /* SCS[0] */
/* Chosen SPI start in master mode */
mibspiREG2->GCR1 = mibspiREG2->GCR1
| (uint32_t)((uint32_t)1U << 24U) /* SPIEN */
| (uint32_t)((uint32_t)0U << 16U) /* LOOPBACK */
| (uint32_t)((uint32_t)0U << 8U) /* POWERDOWN */
| (uint32_t)((uint32_t)1U << 1U) /* CLKMOD */
| (uint32_t)((uint32_t)1U << 0U); /* MASTER */
uint8_t chip_select = 0xFD;
while(((mibspiREG2->BUF) & 0x20000000) != 0u){
/* wait for the TXFULL bit to be reset before writing new data to SPIDAT1 register
* @note: 0 - transmit buffer is empty, ready to accept a new data
* 1 - transmit buffer is full, not ready to accept new data */
}
mibspiREG2->DAT1 = ((uint32_t)0U << 28u)
| ((uint32_t)63U << 26u)
| ((uint32_t)0U << 24u)
| ((uint32_t)chip_select << 16u)
| ((uint32_t)49152U);
while(((mibspiREG2->BUF) & 0x80000000u) != 0u){
/* wait for the RXEMPTY bit to be reset before reading the SPIBUF register
* @note: 0 - new data has been received and copied into RXDATA
* 1 - no data has been received since the last read of RXDATA */
}
PMIC_VAL = (uint32_t)mibspiREG2->BUF;
使用 示波器查看信号似乎 CS 像我想的那样无法正常工作。 TPS65381要求 Us 之间的消息停用 CS。 我的理解是 CS 在每条消息后停用为默认状态，除非设置了 CS_HOLD (对我来说不是)。 需要注意的是、SPI 旨在以兼容模式使用、但之后我们将过渡到 MiBSPI。
您能告诉我我在这里做了什么可能是错误的,我不能与 TPS65381AQDAPRQ1正常通信.
