SLAU723A October 2017 – October 2018 MSP432E401Y , MSP432E411Y
SP is shown in Figure 1-5 and described in Table 1-5.
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The Stack Pointer (SP) is register R13. In thread mode, the function of this register changes depending on the ASP bit in the Control Register (CONTROL) register. When the ASP bit is clear, this register is the Main Stack Pointer (MSP). When the ASP bit is set, this register is the Process Stack Pointer (PSP). On reset, the ASP bit is clear, and the processor loads the MSP with the value from address 0x0000.0000. The MSP can only be accessed in privileged mode; the PSP can be accessed in either privileged or unprivileged mode.
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