Improve terminal write usage message
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0b2f38c67d
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ddffabe86a
31
src/term.c
31
src/term.c
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@ -523,10 +523,33 @@ static int cmd_write(PROGRAMMER * pgm, struct avrpart * p,
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{
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{
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if (argc < 4) {
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if (argc < 4) {
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avrdude_message(MSG_INFO,
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avrdude_message(MSG_INFO,
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"Usage: write <memtype> <start addr> <data1> <data2> <dataN>\n"
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"Usage: write <memory> <addr> <data>[,] {<data>[,]} \n"
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" write <memtype> <start addr> <no. bytes> <data1> <dataN> <...>\n\n"
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" write <memory> <addr> <len> <data>[,] {<data>[,]} ...\n"
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" Add a suffix to manually specify the size for each field:\n"
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"\n"
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" HH/hh: 8-bit, H/h/S/s: 16-bit, L/l: 32-bit, LL/ll: 64-bit, F/f: 32-bit float\n");
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"Ellipsis ... writes <len> bytes padded by repeating the last <data> item.\n"
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"\n"
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"<data> can be hexadecimal, octal or decimal integers, double, float or\n"
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"C-style strings and chars. For numbers, an optional case-insensitive suffix\n"
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"specifies the data size: HH: 8 bit, H/S: 16 bit, L: 32 bit, LL: 64 bit, F:\n"
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"32-bit float. Hexadecimal floating point notation is supported. The\n"
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"ambiguous trailing F in 0x1.8F makes the number be interpreted as double;\n"
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"use a zero exponent as in 0x1.8p0F to denote a hexadecimal float.\n"
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"\n"
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"An optional U suffix makes a number unsigned. Ordinary 0x hex numbers are\n"
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"always treated as unsigned. +0x or -0x hex numbers are treated as signed\n"
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"unless they have a U suffix. Unsigned integers cannot be larger than 2^64-1.\n"
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"If n is an unsigned integer then -n is also a valid unsigned integer as in C.\n"
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"Signed integers must fall into the [-2^63, 2^63-1] range or a correspondingly\n"
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"smaller range when a suffix specifies a smaller type. Out of range signed\n"
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"numbers trigger a warning.\n"
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"\n"
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"Ordinary 0x hex numbers with n hex digits (counting leading zeros) use\n"
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"the smallest size of 1, 2, 4 and 8 bytes that can accommodate any n-digit hex\n"
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"number. If a suffix specifies a size explicitly the corresponding number of\n"
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"least significant bytes are written. Otherwise, signed and unsigned integers\n"
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"alike occupy the smallest of 1, 2, 4, or 8 bytes needed to accommodate them\n"
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"in their respective representation.\n"
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);
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return -1;
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return -1;
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}
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}
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