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Hi: I want to control c5402 DSK through PC's parallel port with the functions in evmdsk54x.dll. My 1st question is, I can initialize the board and HPI, and can access CPLD registers, but when I use the following code to access HPI registers, it always return false. Register reg; reg.Regoff = 0; reg.DataVal = 2; bSuc = evmdsk54x_read_hpi_reg( m_hpi_map, ®, 0 ); bSuc = evmdsk54x_write_hpi_reg( m_hpi_map, ®, 0 ); Another question is when I use code as following to enable host INT, It return FALSE, too, I don't know the reason. // Enable interrupt ULONG intMask = HINT; if ( !evmdsk54x_enable_int(m_hpi_map, intMask) ) return FALSE; The 3rd is, I want DSP and PC interrupt each other, I moniter(VxD) my PC(host)'s INT 7, what should I do? when DSP interrupts the host, will my Vxd recieve the INT? Thanks ______________________________________ =================================================================== ѵ(http://mail.sina.com.cn) 100İͬʱô? (http://cheese.sina.com.cn) Ϣ (http://classad.sina.com.cn/) |
how to access host accessible registers
Started by ●September 6, 2001
