This is my Intialization for Configuring SPI of XMC4500 Relax kit lite with keil Development Environment, It does not use Dave apps. When i Debug the Program by calling the Function to Main Not even One Register In the USIC1_CH1 channel has been Configured, Every Register in USIC1_CH1 is set to or confined to the same value 0xffff. Is there a Linker script problem or Something I need to do special to access the Registers using keil?
#include <XMC4500.h> void SPI_config( void ) { // Disable SPI //USIC1_CH1->CCR &= ~( ((uint32_t)(0x01U & USIC_CH_CCR_MODE_Msk))); // Enable SPI USIC1_CH1->CCR |= 0x0001; // Switch off the Baud rate generation USIC1_CH1->FDR=0; USIC1_CH1->BRG=0; // For Full duplex Configuration USIC1_CH1->DX0CR |= (((1U << USIC_CH_DX0CR_INSW_Pos) & \ USIC_CH_DX0CR_INSW_Msk)); // HPCEN is Diabled USIC1_CH1->CCR |= ((0U << USIC_CH_CCR_HPCEN_Pos) & \ USIC_CH_CCR_HPCEN_Msk); /* Configuration of Protocol Control Register */ USIC1_CH1->PCR_SSCMode |= (((0x00U & USIC_CH_PCR_SSCMode_MSLSEN_Msk)) | \ ((0U << USIC_CH_PCR_SSCMode_SELCTR_Pos) & \ USIC_CH_PCR_SSCMode_SELCTR_Msk) | \ ((0U << USIC_CH_PCR_SSCMode_SELINV_Pos) & \ USIC_CH_PCR_SSCMode_SELINV_Msk) | \ ((0U << USIC_CH_PCR_SSCMode_CTQSEL1_Pos) & \ USIC_CH_PCR_SSCMode_CTQSEL1_Msk) | \ ((0U << USIC_CH_PCR_SSCMode_PCTQ1_Pos) & \ USIC_CH_PCR_SSCMode_PCTQ1_Msk) | \ ((0U << USIC_CH_PCR_SSCMode_DCTQ1_Pos) & \ USIC_CH_PCR_SSCMode_DCTQ1_Msk) | \ ((0U << USIC_CH_PCR_SSCMode_MSLSIEN_Pos) & \ USIC_CH_PCR_SSCMode_MSLSIEN_Msk) | \ ((0U << USIC_CH_PCR_SSCMode_SELO_Pos) & \ USIC_CH_PCR_SSCMode_SELO_Msk) | \ ((0U << USIC_CH_PCR_SSCMode_TIWEN_Pos) \ & USIC_CH_PCR_SSCMode_TIWEN_Msk)); /* Configuration of USIC Shift Control */ USIC1_CH1->SCTR &= \ (~(uint32_t)(USIC_CH_SCTR_SDIR_Msk | USIC_CH_SCTR_FLE_Msk | \ USIC_CH_SCTR_WLE_Msk | USIC_CH_SCTR_HPCDIR_Msk | \ USIC_CH_SCTR_DSM_Msk)); /* Configuration of USIC Shift Control */ USIC1_CH1->SCTR |= \ (((1U << USIC_CH_SCTR_PDL_Pos ) & \ USIC_CH_SCTR_PDL_Msk ) | \ ((1U << USIC_CH_SCTR_TRM_Pos ) & \ USIC_CH_SCTR_TRM_Msk ) | \ (((FrameLen - 1U) << USIC_CH_SCTR_FLE_Pos)\ & USIC_CH_SCTR_FLE_Msk ) | \ (((WordLen - 1U) << USIC_CH_SCTR_WLE_Pos) \ & USIC_CH_SCTR_WLE_Msk)); // DX0D is selected /* Configure P0.0 MTSR / U1C1.DX0D */ WR_REG(USIC1_CH1->DX0CR, (uint32_t)USIC_CH_DX0CR_DSEL_Msk, \ USIC_CH_DX0CR_DSEL_Pos,(uint32_t)3); /* Configure P0.10, CLKIN (U1C1.DX1A) */ USIC1_CH1->DX1CR = (0 << USIC_CH_DX1CR_DSEL_Pos) | // DX1A is selected (1 << USIC_CH_DX1CR_INSW_Pos) | (0 << USIC_CH_DX1CR_DFEN_Pos) | (0 << USIC_CH_DX1CR_DSEN_Pos) | (0 << USIC_CH_DX1CR_DPOL_Pos) | (0 << USIC_CH_DX1CR_SFSEL_Pos) | (0 << USIC_CH_DX1CR_CM_Pos) | (0 << USIC_CH_DX1CR_DXS_Pos) ; /* Configure P0.9, CS (U1C1.DX2A) Chip select */ USIC1_CH1->DX2CR = (0 << USIC_CH_DX2CR_DSEL_Pos) | // DX2A is selected (1 << USIC_CH_DX2CR_INSW_Pos) | (0 << USIC_CH_DX2CR_DFEN_Pos) | (0 << USIC_CH_DX2CR_DSEN_Pos) | (0 << USIC_CH_DX2CR_DPOL_Pos) | (0 << USIC_CH_DX2CR_SFSEL_Pos) | (0 << USIC_CH_DX2CR_CM_Pos) | (0 << USIC_CH_DX2CR_DXS_Pos) ; /* Control P0.10 as Clock Input pin, Strong drive strength */ PORT0->IOCR8 = (PORT0->IOCR8 & ~ 0xF80000) | (0 << 19); PORT0->PDR1 = (PORT0->PDR1 & ~0x700) | (2 << 8); /* Control P0.9 as Chip select Input pin, Strong drive strength */ PORT1->IOCR8 = (PORT1->IOCR8 & ~0xF800) | (0 << 11); PORT1->PDR1 = (PORT1->PDR1 & ~0x70) | (2 << 4); /* Control P0.0 MTSR as Input pin, Strong drive strength */ PORT1->IOCR0 = (PORT1->IOCR0 & ~0xF8) | (0 << 3); PORT1->PDR0 = (PORT1->PDR0 & ~0x7) | (2 << 0); USIC1_CH1->CCR |= (((uint32_t)(1U & USIC_CH_CCR_MODE_Msk))); }
Every Register in USIC1_CH1 is set to or confined to the same value 0xffff.
Might that suggest you need to enable a clock or something?
Hii,
No matter, How many times I debug or run the program, the register values are the same, so i referred to the word confined. I have been trying to run the program since 5 days, but every time all the register values are the same, atleast something must change, but nothing changed.
thank you, ravi
I have Initialised the clock but the result is the same,Just to Initialise the Register or the channel, does XMC4500 need a clock? I am new to the XMC series.
Thank you, ravi