FreeCalypso > hg > freecalypso-tools

annotate target-utils/c139explore/main.c @ 526:fc3592a27317

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c139explore boot delay adjusted for running at 26 MHz
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 14 Jun 2019 05:51:38 +0000
parents da53ea0a38ba
children
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e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
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1 #include "types.h"
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fc3592a27317 c139explore boot delay adjusted for running at 26 MHz
Mychaela Falconia <falcon@freecalypso.org>
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3 #define DELAY_1MS 6500 /* ARM7 core runs at 26 MHz here, not 52 MHz */
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da53ea0a38ba c139explore: osmo_delay_ms-ectomy and GPIO init fix
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5 main()
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6 {
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7 /* delay kludge workaround for defect in fc-compalram */
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da53ea0a38ba c139explore: osmo_delay_ms-ectomy and GPIO init fix
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8 wait_ARM_cycles(DELAY_1MS * 30);
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9 printf("C139 hardware exploration utility running\n");
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10 /* GPIO init, compatible with both C139 and SE J100 */
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11 *(volatile u16 *)0xfffe4802 = 0x0002;
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12 *(volatile u16 *)0xfffe4804 = 0x2A59;
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f24b31082605 c139explore: turn on ARMIO module clock, needed to exercise the buzzer
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13 *(volatile u16 *)0xfffe4806 = 0xFFF3; /* enable ARMIO clock */
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14 /* take peripherals out of reset */
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15 *(volatile u16 *)0xfffffd04 = 0xFFF3;
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16 abb_init();
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17 uwire_init();
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18 for (;;) {
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19 putchar('=');
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20 if (command_entry())
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21 command_dispatch();
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22 }
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23 }