35 lines
1.0 KiB
C
35 lines
1.0 KiB
C
/* ram2e_max_bitbang(...) sends the "Set UFM Bitbang Outputs" to the RAM2E */
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static void ram2e_max_bitbang(char bitbang) { ram2e_cmd(0xEA, bitbang); }
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/* ram2e_max_program(...) sends the "UFM Program Once" command to the RAM2E */
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static void ram2e_max_program() { ram2e_cmd(0xEF, 0x00); }
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/* ram2e_max_erase(...) sends the "UFM Erase Once" command to the RAM2E */
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static void ram2e_max_erase() { ram2e_cmd(0xEE, 0x00); }
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/* ram2e_max_save(...) */
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static void ram2e_max_save(char mask, char enled) {
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char i;
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char led;
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if (mask == 0xFF) { mask = 0x80; } // Encode 0xFF mask properly
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// Shift mask into UFMD
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for (i = 0; i < 8; i++) {
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ram2e_max_bitbang(0x80 | ((mask << (i-1)) & 0x40));
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}
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// Shift LED setting into UFMD
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if (( enled && (mask >> 7)) ||
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(!enled && !(mask >> 7))) { led = 0x80; }
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else { led = 0xC0; }
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ram2e_max_bitbang(led);
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// Shift low six bits of mask into UFMD again
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for (i = 1; i < 8; i++) {
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ram2e_max_bitbang(0x80 | ((mask << (i-1)) & 0x40));
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}
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// Program UFM
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ram2e_max_program();
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}
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