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comparison src/jtag.c @ 7:61f27549de57

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Support TRST.
author Thinker K.F. Li <thinker@branda.to>
date Sun, 22 Feb 2009 14:20:57 +0800
parents eb14cac68cbb
children cc106f278d7d
comparison
equal deleted inserted replaced
6:42dec3428c77 7:61f27549de57
27 CLK_DELAY(); \ 27 CLK_DELAY(); \
28 TCK_HI(); \ 28 TCK_HI(); \
29 CLK_DELAY(); \ 29 CLK_DELAY(); \
30 } while(0) 30 } while(0)
31 #define GET_TDO() (JTAG_PIN & _BV(JTAG_TDO)) 31 #define GET_TDO() (JTAG_PIN & _BV(JTAG_TDO))
32
33 void jtag_trst(void) {
34 SEND_BIT(JTAG_TRST, 1);
35 TCK_LO();
36 pin_lo(JTAG_PORT, JTAG_TRST);
37 }
32 38
33 /*! 39 /*!
34 * Before shifting registers, TAP controller must move to last state before 40 * Before shifting registers, TAP controller must move to last state before
35 * shift state. The state machine transite to shift state when shifting 41 * shift state. The state machine transite to shift state when shifting
36 * starts. 42 * starts.