xushaoxiang
44 lines
1.4 KiB
C
44 lines
1.4 KiB
C
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#include "DMA_uart_debug.h"
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volatile uint8_t __attribute__((aligned(4))) DMA_buf[16] = {0XAA, 0XAA, 0XAA, 0XAA};
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#define DMAS_BASE 0x50001000
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// #define DMAS_CHx_SAR(a) ((volatile unsigned *)(DMAS_BASE + 0x40 + (a * 0x20)))
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// #define DMAS_CHx_DAR(a) ((volatile unsigned *)(DMAS_BASE + 0x44 + (a * 0x20)))
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// #define DMAS_CHx_CTL0(a) ((volatile unsigned *)(DMAS_BASE + 0x48 + (a * 0x20)))
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// #define DMAS_CHx_CTL1(a) ((volatile unsigned *)(DMAS_BASE + 0x4C + (a * 0x20)))
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// #define DMAS_CHx_CA(a) ((volatile unsigned *)(DMAS_BASE + 0x50 + (a * 0x20)))
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// #define DMAS_EN ((volatile unsigned *)(DMAS_BASE + 0))
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#define DMAS_STA ((volatile unsigned *)(DMAS_BASE + 0x08))
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__XIP_RAM_CODE void DMA_Uart(uint8_t ch)
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{
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__write_hw_reg32(DMAS_CHx_SAR(ch), (uint32_t)DMA_buf);
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__write_hw_reg32(DMAS_CHx_DAR(ch), (ch * 0x1000 + 0x40010000));
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__write_hw_reg32(DMAS_CHx_CTL1(ch), ((2 << 8)));
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__write_hw_reg32(DMAS_CHx_CTL0(ch), 4);
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}
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__XIP_RAM_CODE void DMA_Uart_SendChar(uint8_t ch)
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{
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__write_hw_reg32(DMAS_CHx_CTL0(ch), 4);
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while ((*(DMAS_STA)) & (0x01 << ch))
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;
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*(DMAS_EN) = ch;
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}
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__XIP_RAM_CODE void DMA_Uart_SendNumChar(uint8_t ch, uint8_t bt)
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{
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__write_hw_reg32(DMAS_CHx_CTL0(ch), bt);
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while ((*(DMAS_STA)) & (0x01 << ch))
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;
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*(DMAS_EN) = ch;
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}
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/*
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void DMA_Uart_SendChar_1(uint8_t ch)
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{
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while((*(DMAS_STA))&(0x01<<ch));
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*(DMAS_EN)=ch;
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}*/
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