mirror of
https://github.com/OpenEPaperLink/OpenEPaperLink.git
synced 2026-03-21 03:04:25 +01:00
162 lines
3.4 KiB
C
162 lines
3.4 KiB
C
#include <stdbool.h>
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#include "printf.h"
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#include "screen.h"
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#include "board.h"
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#include "flash.h"
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#include "uart.h"
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#include "spi.h"
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#include "cpu.h"
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#include "wdt.h"
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#include "i2c.h"
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#include <stdlib.h>
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void powerPortsDownForSleep(void)
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{
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P0FUNC = 0;
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P1FUNC = 0;
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P2FUNC = 0;
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P0DIR = 0;
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P0 = 0;
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P0PULL = 0;
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P1DIR = 0;
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P1 = 2;
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P1PULL = 0;
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P2DIR = 2;
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P2 =1;
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P2PULL = 0;
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}
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void boardInit(void)
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{
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//set up pins for spi(0.0,0.1,0.2), UART (0.6)
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P0FUNC |= (1 << 0) | (1 << 1) | (1 << 2) | (1 << 6);
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P0DIR = (P0DIR &~ ((1 << 0) | (1 << 1) | (1 << 6))) | (1 << 2);
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//pulls for spi in
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P0PULL = (P0PULL &~ ((1 << 0) | (1 << 1) | (1 << 6))) | (1 << 2);
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//setup 1.1(eeprom_nCS), 1.2(eink_BS1), 1.7(eink_nCS)
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P1FUNC &=~ ((1 << 1) | (1 << 2) | (1 << 7));
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P1DIR &= ~((1 << 1) | (1 << 2) | (1 << 7));
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//setup 2.0(eink_nRST), 2.1(eink_BUSY), 2.2(eink_D/nC)
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P2FUNC &= ~((1 << 0) | (1 << 1) | (1 << 2));
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P2DIR = (P2DIR &~ ((1 << 0) | (1 << 2))) | (1 << 1);
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//raise chip select(s)
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P1_1 = 1;
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P1_7 = 1;
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//BS1 = low
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P1_2 = 0;
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spiInit();
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}
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__bit boardGetOwnMac(uint8_t __xdata *mac)
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{
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return flashRead(FLASH_INFOPAGE_ADDR + 0x10, mac, 8);
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}
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#pragma callee_saves prvUpdateApplierGet
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static uint32_t prvUpdateApplierGet(void) __naked
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{
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__asm__(
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" mov DPTR, #00098$ \n"
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" mov A, #00099$ \n"
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" clr C \n"
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" subb A, DPL \n"
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" mov B, A \n"
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" ret \n"
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///actual updater code
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"00098$: \n"
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//copied to last page of flash for updating, called with ints off and eeprom ready to read update
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//flashes 63 flash pages, uses xram for buffer. uses combined erase+flash flash op
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" mov _CLKSPEED, #0x21 \n"
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" mov _CFGPAGE, #0x04 \n"
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" mov R0, #0 \n"
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"00001$: \n"
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//read a page of update
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" mov DPTR, #0xe000 \n"
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" mov R1, #0x04 \n"
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" mov R2, #0x00 \n"
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"000010$: \n"
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" mov _SPITX, #0x00 \n"
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" mov _SPICFG, #0xa0 \n"
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"000011$: \n"
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" mov A, _SPICFG \n"
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" jb A.5, 000011$ \n"
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" mov A, _SPIRX \n"
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" movx @DPTR, A \n"
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" inc DPTR \n"
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" djnz R2, 000010$ \n"
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" djnz R1, 000010$ \n"
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//flash it
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" clr A \n"
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" orl _SETTINGS, #0x38 \n"
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" mov _FWRTHREE, #0x03 \n"
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" mov _FPGNO, R0 \n"
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" mov _FWRDSTL, A \n"
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" mov _FWRDSTH, A \n"
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" mov _FWRLENL, #0xff \n"
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" mov _FWRLENH, #0x03 \n"
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" mov _FWRSRCL, A \n"
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" mov _FWRSRCH, #0xe0 \n"
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" orl _TRIGGER, #0x08 \n"
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"00050$: \n"
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" mov A, _TCON2 \n"
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" jnb A.3, 00050$ \n"
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" anl _TCON2, #~0x48 \n"
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" anl _SETTINGS, #~0x10 \n"
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//go do next page
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" inc R0 \n"
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" cjne R0, #63, 00001$ \n"
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//done? reset
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" mov _WDTCONF, #0x80 \n"
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" mov _WDTENA, #0x01 \n"
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" mov A, #0xff \n"
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" mov _WDTRSTVALH, A \n"
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" mov _WDTRSTVALM, A \n"
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" mov _WDTRSTVALL, A \n"
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"00090$: \n"
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" sjmp 00090$ \n"
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"00099$: \n"
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);
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}
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void selfUpdate(void)
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{
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uint8_t __xdata *tempBuffer;
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tempBuffer = malloc(320);
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uint32_t updaterInfo = prvUpdateApplierGet();
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uint8_t __code *src = (uint8_t __code*)updaterInfo;
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uint8_t i, len = updaterInfo >> 16;
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uint8_t __xdata *dst = tempBuffer;
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if(!tempBuffer)wdtDeviceReset();
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for (i = len; i ; i--)
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*dst++ = *src++;
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if (!flashWrite(0xfc00, tempBuffer, len, true))
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pr("failed to write updater\n");
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IEN_EA = 0; //ints off
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__asm__(
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" mov dptr, #0xfc00 \n"
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" clr a \n"
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" jmp @a+dptr \n"
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);
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} |